DETERMINING SHORT TO POWER SUPPLY LOCATION (HS-CAN)

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2014 - Mazda6 - Multiplex Communication System

DETERMINING SHORT TO POWER SUPPLY LOCATION (HS-CAN)

CAUTION:

Perform the following malfunction diagnosis only when it is diagnosed with a short to power supply by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW.

System wiring diagram

Determination procedure

CAUTION:

When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.

When inspecting the DLC-2, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.

Disconnect the negative battery cable before performing any work that requires handling of connectors.

NOTE:

If the ignition does not turn on even if the ignition is switched ON, switch the ignition ON referring to the forced ignition ON procedure. (See FORCED IGNITION ON.)


Step	Inspection		Action
1	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN FRONT BODY CONTROL MODULE (FBCM) AND INSTRUMENT CLUSTER Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector 2 which has front body control module (FBCM) terminals 2K and 2I Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Go to the next step.
1		No	Go to Step 4.
2	INSPECT CAN LINE BETWEEN AFS CONTROL MODULE AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY Measure the voltage at AFS control module terminals AB and AD. Is the voltage between 1.5 — 3.5 V?	Yes	Go to Step 34.
2		No	Go to the next step.
3	INSPECT AFS CONTROL MODULE FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect the AFS control module connector. Connect connector 2 which has front body control module (FBCM) terminals 2K and 2I Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Replace the AFS control module because there is a short to the power supply in the AFS control module. (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)
3		No	Repair or replace the wiring harness between AFS control module and the front body control module (FBCM) because the wiring harness is shorted to the power supply.
4	INSPECT CAN LINE BETWEEN CONNECTOR C-04 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-04. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Repair or replace the wiring harness between the front body control module (FBCM) and connector C-04 because the wiring harness is shorted to the power supply.
4		No	Go to the next step.
5	INSPECT CAN LINE BETWEEN CONNECTORS C-49 AND C-50 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connectors C-49 and C-50. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
5		No	Go to Step 10.
6	INSPECT CAN LINE BETWEEN VEHICLE CONTROL MODULE (V/C-MODULE) / DC-DC CONVERTER (i-ELOOP) AND CONNECTORS C-49 AND C-50 FOR SHORT TO POWER SUPPLY Measure the voltage at vehicle control module (V/C-module) terminals S and U. (with smart brake support) Measure the voltage at DC-DC converter (i-ELOOP) terminals 1A and 1C. (with i-ELOOP system) Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-04 and connectors C-49 and C-50 because the wiring harness is shorted to the power supply.
6		No	Go to the next step.
7	INSPECT CAN LINE BETWEEN VEHICLE CONTROL MODULE (V/C-MODULE) AND CONNECTORS C-49 AND C-50 FOR SHORT TO POWER SUPPLY Measure the voltage at vehicle control module (V/C-module) terminals S and U. Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 9.
7		No	Go to the next step.
8	INSPECT VEHICLE CONTROL MODULE (V/C-MODULE) FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connectors C-49 and C-50. Disconnect the vehicle control module (V/C-module) connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the vehicle control module (V/C-module) because there is a short to the power supply in the vehicle control module (V/C-module). (See VEHICLE CONTROL MODULE (V/C-MODULE) INSPECTION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)
8		No	Repair or replace the wiring harness between the vehicle control module (V/C-module) and connectors C-49 and C-50 because the wiring harness is shorted to the power supply.
9	INSPECT DC-DC CONVERTER (i-ELOOP) FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connectors C-49 and C-50. Disconnect the DC-DC converter (i-ELOOP) connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the DC-DC converter (i-ELOOP) because there is a short to the power supply in the DC-DC converter (i-ELOOP). (See DC-DC CONVERTER REMOVAL/INSTALLATION [i-ELOOP].)
9		No	Repair or replace the wiring harness between the DC-DC converter (i-ELOOP) and connectors C-49 and C-50 because the wiring harness is shorted to the power supply.
10	INSPECT CAN LINE BETWEEN CONNECTORS C-51 AND C-52 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connectors C-51 and C-52. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
10		No	Go to Step 14.
11	INSPECT CAN LINE BETWEEN POSITION MEMORY CONTROL MODULE AND CONNECTORS C-51 AND C-52 FOR SHORT TO POWER SUPPLY Measure the voltage at position memory control module terminals 1C and 1E. Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connectors C-49 and C-50 and connectors C-51 and C-52 because the wiring harness is shorted to the power supply.
11		No	Go to the next step.
12	INSPECT CAN LINE BETWEEN POSITION MEMORY CONTROL MODULE AND CONNECTOR C-55 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-55. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at position memory control module terminals 1C and 1E. Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-55 and connectors C-51 and C-52 because the wiring harness is shorted to the power supply.
12		No	Go to the next step.
13	INSPECT POSITION MEMORY CONTROL MODULE FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-51 and C-52. Connect connector C-55. Disconnect the position memory connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the position memory control module because there is a short to the power supply in the position memory control module. (See FRONT SEAT REMOVAL/INSTALLATION.)
13		No	Repair or replace the wiring harness between the position memory control module and connector C-55 because the wiring harness is shorted to the power supply.
14	INSPECT CAN LINE BETWEEN CONNECTOR C-10 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-10. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connectors C-51 and C-52 and connector C-10 because the wiring harness is shorted to the power supply.
14		No	Go to the next step.
15	INSPECT CAN LINE BETWEEN CONNECTOR C-11 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-11. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
15		No	Go to Step 22.
16	INSPECT CAN LINE BETWEEN CONNECTOR C-11 AND LASER SENSOR / FORWARD SENSING CAMERA FOR SHORT TO POWER SUPPLY Measure the voltage at laser sensor terminals D and C (with smart city brake support). Measure the voltage at the forward sensing camera terminals E and C (with forward sensing camera). Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-10 and connector C-11 because the wiring harness is shorted to the power supply.
16		No	Go to the next step.
17	INSPECT CAN LINE BETWEEN LASER SENSOR AND CONNECTOR C-42 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-42. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at laser sensor terminals D and C. Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 19.
17		No	Go to the next step.
18	INSPECT LASER SENSOR FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect the laser sensor connector. Connect connector C-42. Connect connector C-11. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the laser sensor because there is a short to the power supply in the laser sensor. (See LASER SENSOR REMOVAL/INSTALLATION.)
18		No	Repair or replace the wiring harness between the laser sensor and connector C-42 because the wiring harness is shorted to the power supply.
19	INSPECT CAN LINE BETWEEN FORWARD SENSING CAMERA AND CONNECTOR C-42 FOR SHORT TO POWER SUPPLY Measure the voltage at forward sensing camera terminals E and C. Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-11 and connector C-42 because the wiring harness is shorted to the power supply.
19		No	Go to the next step.
20	INSPECT CAN LINE BETWEEN CONNECTOR C-27 AND FORWARD SENSING CAMERA FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-27. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at the forward sensing camera terminals E and C. Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-42 and connector C-27 because the wiring harness is shorted to the power supply.
20		No	Go to the next step.
21	INSPECT FORWARD SENSING CAMERA FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect the forward sensing camera connector. Connect connector C-42. Connect connector C-11. Connect connector C-27. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the forward sensing camera because there is a short to the power supply in the forward sensing camera. (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)
21		No	Repair or replace the wiring harness between the forward sensing camera and connector C-27 because the wiring harness is shorted to the power supply.
22	INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND DLC-2 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-34. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage 0 V?	Yes	Go to the next step.
22		No	Repair or replace the wiring harness between connector C-34 and DLC-2 because the wiring harness is shorted to the power supply.
23	INSPECT CAN LINE BETWEEN EPS CONTROL MODULE AND CONNECTOR C-34 FOR SHORT TO POWER SUPPLY Measure the voltage at EPS control module terminals 2A and 2D. Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 25.
23		No	Go to the next step.
24	INSPECT EPS CONTROL MODULE FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-34. Disconnect the EPS control module connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals E and F. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the EPS control module because there is a short to the power supply in the EPS control module. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
24		No	Repair or replace the wiring harness between the EPS control module and connector C-34 because the wiring harness is shorted to the power supply.
25	INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Measure the voltage at instrument cluster terminals B and D. Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between the connector C-11 and connector C-34 because the wiring harness is shorted to the power supply.
25		No	Go to the next step.
26	INSPECT CAN LINE BETWEEN START STOP UNIT AND CONNECTOR C-35 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-35. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at start stop unit terminals 2M and 2O. Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 28.
26		No	Go to the next step.
27	INSPECT START STOP UNIT FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-35. Connect connector C-34. Disconnect the start stop unit connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals E and F. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the start stop unit because there is a short to the power supply in the start stop unit. (See START STOP UNIT REMOVAL/INSTALLATION.)
27		No	Repair or replace the wiring harness between the start stop unit and connector C-35 because the wiring harness is shorted to the power supply.
28	INSPECT CAN LINE BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-35 FOR SHORT TO POWER SUPPLY Measure the voltage at audio amplifier terminals 2L and 2N. Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 30.
28		No	Go to the next step.
29	INSPECT AUDIO AMPLIFIER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-35. Connect connector C-34. Disconnect the audio amplifier connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals E and F. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the audio amplifier because there is a short to the power supply in the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
29		No	Repair or replace the wiring harness between the audio amplifier and connector C-35 because the wiring harness is shorted to the power supply.
30	INSPECT CAN LINE BETWEEN INSTRUMENT CLUSTER AND CONNECTOR C-35 FOR SHORT TO POWER SUPPLY Measure the voltage at instrument cluster terminals B and D. Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 32.
30		No	Go to the next step.
31	INSPECT INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-35. Connect connector C-34. Disconnect the instrument cluster connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the instrument cluster because there is a short to the power supply in the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
31		No	Repair or replace the wiring harness between the instrument cluster and connector C-35 because the wiring harness is shorted to the power supply.
32	INSPECT CAN LINE BETWEEN SAS CONTROL MODULE AND CONNECTOR C-35 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect the SAS control module connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at SAS control module terminals 3K and 3L (wiring harness side). Is the voltage 0 V?	Yes	Go to the next step.
32		No	Repair or replace the wiring harness between the SAS control module and connector C-35 because the wiring harness is shorted to the power supply.
33	INSPECT CAN LINE BETWEEN CONNECTOR C-34 AND CONNECTOR C-35 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-35. Connect connector C-34. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 - 3.5 V?	Yes	Replace the SAS control module because there is a short to the power supply in the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM].)
33		No	Repair or replace the wiring harness between connector C-34 and connector C-35 because the wiring harness is shorted to the power supply.
34	INSPECT CAN LINE BETWEEN PCM AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY Measure voltage at PCM terminals 2AK and 2AL. Is the voltage between 1.5 — 3.5 V?	Yes	Replace the front body control module (FBCM) because there is a short to the power supply in the front body control module (FBCM). (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)
34		No	Go to the next step.
35	INSPECT CAN LINE BETWEEN CONNECTOR C-01 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-01. Connect connector 2 which has front body control module (FBCM) terminals 2K and 2I. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Go to the next step.
35		No	Repair or replace the wiring harness between connector C-01 and the front body control module (FBCM) because the wiring harness is shorted to the power supply.
36	INSPECT CAN LINE BETWEEN TCM AND CONNECTOR C-01 FOR SHORT TO POWER SUPPLY Measure the voltage at TCM terminals E and F. Is the voltage between 1.5 — 3.5 V?	Yes	Go to Step 38.
36		No	Go to the next step.
37	INSPECT TCM FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-01. Disconnect the TCM connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Replace the TCM because there is a short to the power supply in the TCM. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)
37		No	Repair or replace the wiring harness between the TCM and connector C-01 because the wiring harness is shorted to the power supply.
38	INSPECT CAN LINE BETWEEN CONNECTOR C-32 AND CONNECTOR C-01 FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Disconnect connector C-32. Connect connector C-01. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Go to the next step.
38		No	Repair or replace the wiring harness between connector C-32 and connector C-01 because the wiring harness is shorted to the power supply.
39	INSPECT CAN LINE BETWEEN DSC HU/CM AND CONNECTOR C-32 FOR SHORT TO POWER SUPPLY Measure voltage at DSC HU/CM terminals E and D. Is the voltage between 1.5 — 3.5 V?	Yes	Go to Step 41.
39		No	Go to the next step.
40	INSPECT DSC HU/CM FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-32. Disconnect the DSC HU/CM connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Replace the DSC HU/CM because there is a short to the power supply in the DSC HU/CM. (See DSC HU/CM REMOVAL/INSTALLATION.)
40		No	Repair or replace the wiring harness between the DSC HU/CM and connector C-32 because the wiring harness is shorted to the power supply.
41	INSPECT PCM FOR SHORT TO POWER SUPPLY Switch the ignition off (LOCK). Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Connect connector C-32. Disconnect the PCM connector. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].) Switch the ignition ON (engine off). Measure the voltage at DLC-2 terminals F and E. Is the voltage between 1.5 — 3.5 V?	Yes	Replace the PCM because there is a short to the power supply in the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)
41		No	Repair or replace the wiring harness between the PCM and connector C-32 because the wiring harness is shorted to the power supply.

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