Description

Shift-lock solenoid circuit malfunction

Detection condition

• Start stop unit detects the shift-lock solenoid is stuck on for 30 min or more with the ignition switched ON (engine off or on).

Fail-safe function

• Inhibits the shift lock control.

Possible cause

• Selector lever component connector or terminal malfunction

• Shift-lock solenoid power supply circuit malfunction

• Short to ground in wiring harness between ENGINE.IG1 7.5 A fuse and selector lever component terminal A

• ENGINE.IG1 7.5 A fuse malfunction

• Open circuit in wiring harness between IG1 relay and selector lever component terminal A

• Start stop unit connector or terminal malfunction

• Short to ground in the wiring harness between selector lever component terminal H and start stop unit terminal 2G

• Open circuit in the wiring harness between selector lever component terminal H and start stop unit terminal 2G

• Shift-lock solenoid malfunction

• Start stop unit malfunction

Step

Inspection

Action

1

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Disconnect the selector lever component connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

2

• Verify that the selector lever component connector is disconnected.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Switch the ignition ON (engine off or on).

• Measure the voltage at the selector lever component terminal A (wiring harness-side).

• Is the voltage B+?

Yes

Go to the next step.

No

Inspect the ENGINE.IG1 7.5 A fuse.

• If the fuse is burnt out:

• Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE.IG1 7.5 A fuse and selector lever component 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 the fuse is normal:

• Refer to the wiring diagram and verify whether or not there is a common connector between IG1 relay and selector lever component 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 7.

3

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Disconnect the start stop unit connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

4

• Verify that the selector lever component and start stop unit connectors are disconnected.

• Inspect for continuity between selector lever component terminal H (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 selector lever component terminal H and start stop unit terminal 2G.

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 7.

No

Go to the next step.

5

• Verify that the selector lever component and start stop unit connectors are disconnected.

• Inspect for continuity between selector lever component terminal H (wiring harness-side) and start stop unit terminal 2G (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 selector lever component terminal H and start stop unit terminal 2G.

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 7.

6

• Inspect the shift-lock solenoid.

  (See SHIFT-LOCK SYSTEM INSPECTION.)

• Is the shift-lock solenoid normal?

Yes

Go to the next step.

No

Replace the selector lever component, then go to the next step.

(See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.)

7

• Always reconnect all disconnected connectors.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Clear the DTC for the start stop unit using the M-MDS.

  (See CLEARING DTC [START STOP UNIT].)

• Switch the ignition ON (engine off or on) and wait for 30 min or more.

• Retrieve the start stop unit DTCs using the M-MDS.

  (See DTC INSPECTION [START STOP UNIT].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the start stop unit.

  (See START STOP UNIT REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

8

• Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [START STOP UNIT].)

No

DTC troubleshooting completed.