DTC U1007:00

CAN/LIN communication system: current sensor information communication error with front body control module (FBCM)

DETECTION CONDITION

• PCM detects a current sensor information communication error from front body control module (FBCM).

Diagnostic support note

• This is a continuous monitor (other).

• The check engine light does not illuminate.

• FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits a part of the generator output control.

POSSIBLE CAUSE

• Communication line between current sensor and front body control module (FBCM) malfunction

• Communication line between front body control module (FBCM) and PCM malfunction

• Current sensor connector or terminals malfunction

• Short to ground or open circuit in current sensor power supply circuit

• Short to ground in wiring harness between MAIN 200 A fuse and current sensor terminal A

• MAIN 200 A fuse and/or ENG+B 7.5 A fuse malfunction

• Open circuit in wiring harness between battery positive terminal and current sensor terminal A

• Front body control module (FBCM) connector or terminals malfunction

• Short to ground in wiring harness between current sensor terminal B and front body control module (FBCM) terminal 2E

• Open circuit in wiring harness between current sensor terminal B and front body control module (FBCM) terminal 2E

• Current sensor malfunction

• Front body control module (FBCM) malfunction

STEP

INSPECTION

ACTION

1

• Verify related Service Bulletins and/or on-line repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

2

• Switch the ignition off, then ON (engine off).

• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.

  (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].)

• Are any other PENDING CODEs and/or DTCs present?

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

Go to the next step.

3

NOTE:

• Always disconnect current sensor connector before disconnecting the negative battery cable.

• Switch the ignition off.

• Disconnect the current sensor connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 10.

No

Go to the next step.

4

• Verify that the current sensor connector is disconnected.

• Measure the voltage at the current sensor terminal A (wiring harness-side).

• Is the voltage B+?

Yes

Go to the next step.

No

Inspect the MAIN 200 A fuse and ENG+B 7.5 A fuse.

• If the fuse is blown out:

• Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and current sensor terminal A.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

• Replace the fuse.

• If the fuse is damaged:

• Replace the fuse.

• If all fuses are normal:

• Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and current sensor terminal A.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 10.

5

• Disconnect the front body control module (FBCM) connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 10.

No

Go to the next step.

6

• Verify that the current sensor and front body control module (FBCM) connectors are disconnected.

• Inspect for continuity between current sensor terminal B (wiring harness-side) and body ground.

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between current sensor terminal B and front body control module (FBCM) terminal 2E.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 10.

No

Go to the next step.

7

• Verify that the current sensor and front body control module (FBCM) connectors are disconnected.

• Inspect for continuity between current sensor terminal B (wiring harness-side) and front body control module (FBCM) terminal 2E (wiring harness-side).

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between current sensor terminal B and front body control module (FBCM) terminal 2E.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 10.

8

• Inspect the current sensor.

  (See CURRENT SENSOR INSPECTION [SKYACTIV-G 2.5].)

• Is there any malfunction?

Yes

Replace the current sensor, then go to Step 10.

(See CURRENT SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

No

Go to the next step.

9

• Inspect the front body control module (FBCM).

  (See FRONT BODY CONTROL MODULE (FBCM) INSPECTION.)

• Is there any malfunction?

Yes

Replace the front body control module (FBCM), then go to the next step.

(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)

No

Go to the next step.

10

• Always reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

  (See CLEARING DTC [SKYACTIV-G 2.5].)

• Implement the repeatability verification procedure.

  (See Repeatability Verification Procedure.)

• Perform the DTC Reading Procedure.

  (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].)

• Is the same DTC present?

Yes

Repeat the inspection from Step 1.

No

Go to the next step.

11

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.5].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

DTC troubleshooting completed.