|
Inspection Procedure 16: Inhibitor Switch System <4G63, 4G64>
|
|
OPERATION
The inhibitor switch detects the selector lever position (P, R, N or D) which the driver has selected, and sends the information to the engine-A/T-ECU.
|
COMMENTS ON TROUBLE SYMPTOM
The cause is probably a malfunction of the inhibitor switch, inhibitor switch circuit and engine-A/T-ECU.
|
PROBABLE CAUSES
- Malfunction of the inhibitor switch
- Damaged harness wires and connectors
- Malfunction of the engine-A/T-ECU
|
|
|
STEP 1. MUT-II/III data list
Item 61: Inhibitor switch (Refer to data list reference table  ).
Q: Is the check result normal?
YES:
Intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction ).
NO:
Go to Step 2  .
|
STEP 2. Check the inhibitor switch.
Refer to .
Q: Is the check result normal?
YES:
Go to Step 3 .
NO:
Replace the inhibitor switch.
|
STEP3. Connector check: B-22 Inhibitor switch connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 4 .
NO:
Repair the defective connector.
|
STEP 4. Measure the voltage at the B-22 inhibitor switch connector. - Disconnect the connector, and measure the voltage between terminal 8 and earth at the wiring harness side.
- Turn the ignition switch to the ON position.
OK: System voltage
Q: Is the check result normal?
YES:
Go to Step 5 .
NO:
Go to Step 8 .
|
STEP 5. Connector check: C-109 Engine-A/T-ECU connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 6 .
NO:
Repair the defective connector.
|
STEP 6. Check the harness between inhibitor switch connector B-22 terminal No.3, 7, 4, 1 and engine-A/T-ECU connector C-109 terminal No.101, 108, 121, 102.
Check the output line for short-circuited or open circuit.
Q: Is the check result normal?
YES:
Go to Step 7 .
NO:
Repair the wiring harness.
|
STEP 7. MUT-II/III data list
Item 61: Inhibitor switch (Refer to data list reference table ).
Q: Is the check result normal?
YES:
Intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction ).
NO:
Replace the engine-A/T-ECU.
|
STEP 8. Connectors check: B-16X A/T control relay connector, C-16 J/C(1), C-106 intermediate connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 9 .
NO:
Repair the defective connector.
|
STEP 9. Check the harness between inhibitor switch connector B-22 terminal No.8 and junction block connector C-202 terminal No.12.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES:
Go to Step 7 .
NO:
Repair the wiring harness.
|