Diagnosis Procedure

SHIFT LOCK SYSTEM


Description

Shift lock system circuit consists of the following part.










SHIFT LOCK SYSTEM


Diagnosis Procedure

1.CHECK SELECTOR LEVER POSITION
Check the selector lever position for damage. Refer to (2WD) TM-249, "AWD : Inspection and Adjustment" (AWD) Adjustments
Is the inspection result normal?
YES - GO TO 2.
NO - Adjust control linkage. Refer to (2WD), Adjustments (AWD).
2.CHECK POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect shift lock relay.
3. Check voltage between shift lock relay harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 7.
NO-1 - When pressing the brake pedal, the voltage is 0 V: GO TO 3.
NO-2 - When releasing the brake pedal, the voltage is battery voltage: GO TO 5.
3.CHECK POWER SOURCE
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch vehicle side harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Check the following. If NG, repair or replace damaged parts.
- 10A fuse [No. 7, located in the fuse block (J/B)]
- Harness for short to ground or open between battery and fuse block (J/B).
- Harness for short to ground or open between fuse block (J/B) vehicle side harness connector terminal 8F and stop lamp switch vehicle side harness connector terminal 1.
- Harness for short to ground between fuse block (J/B) vehicle side harness connector terminal
8F and ICC brake hold relay vehicle side harness connector terminal 3. [With ICC (Full Speed
Range) System]
4.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to Component Inspection (Stop Lamp Switch).
Is the inspection result normal?
YES - Check the following. If NG, repair or replace damaged parts.
- Harness for short to ground or open between stop lamp switch vehicle side harness connector terminal 2 and shift lock relay vehicle side harness connector terminal 2.
- Harness for short to ground between ICC brake hold relay vehicle side harness connector terminal 5 and shift lock relay vehicle side harness connector 2. [With ICC (Full Speed Range) System]
NO - Repair or replace damaged parts.
5.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to Component Inspection (Stop Lamp Switch).
Is the inspection result normal?
YES-1 - Without ICC (Full Speed Range) System: Repair or replace harness between stop lamp switch and shift lock relay.
YES-2 - With ICC (Full Speed Range) System: GO TO 6.
NO - Repair or replace damaged parts.
6.CHECK DTC WITH ICC (FULL SPEED RANGE) SYSTEM
With CONSULT-III
Perform "Self Diagnostic Results" in "ICC".
Is any malfunction detected?
YES - Check the DTC detected item. Refer to Testing and Inspection.
NO - Repair or replace harness between stop lamp switch and shift lock relay.
7.CHECK GROUND CIRCUIT
Check continuity between shift lock relay vehicle side harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 8.
NO - Repair or replace damaged parts.
8.CHECK SHIFT LOCK RELAY
Check shift lock relay. Refer to Component Inspection (Shift Lock Relay).
Is the inspection result normal?
YES - GO TO 9.
NO - Repair or replace damaged parts.
9.CHECK POWER SOURCE
1. Turn ignition switch ON.
2. Check voltage between shift lock relay vehicle side harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 10.
NO - Check the following. If NG, repair or replace damaged parts.
- 10A fuse [No. 3, located in the fuse block (J/B)]
- Harness for short to ground or open between push-button ignition switch and fuse block (J/B).
- Harness for short to ground or open between fuse block (J/B) vehicle side harness connector terminal 4F and shift lock relay vehicle side harness connector terminal 5.
10.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect control device connector.
3. Check continuity between control device vehicle side harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 11.
NO - Repair or replace damaged parts.
11.CHECK SHIFT LOCK SOLENOID
Check shift lock solenoid. Refer to Component Inspection (Shift Lock Solenoid).
Is the inspection result normal?
YES - Check the following. If NG, repair or replace damaged parts.
- Harness for short to ground, short to power or open between shift lock relay vehicle side harness connector terminal 3 and control device vehicle side harness connector terminal 8.
- Harness for short to ground, short to power or open between control device harness connector terminal 8 and shift lock unit harness connector terminal 3.
- Harness for open between control device harness connector terminal 4 and shift lock unit harness connector terminal 4.
NO - Repair or replace damaged parts.