Inspection Procedure 18: The AFS OFF Indicator does not Illuminate or Go out.
| caution | Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal. |
COMMENTS ON TROUBLE SYMPTOM
PROBABLE CAUSES
- Malfunction of the AFS control switch
- Malfunction of the AFS-ECU
- Malfunction of the combination meter
- Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Connector check: C-132 AFS control switch connector
Q.
Is the check result normal?
STEP 2. Check the AFS control switch.
Q.
Is the check result normal?
STEP 3. Resistance measurement at the C-132 AFS control switch connector
| (1)Disconnect the connector, and measure at the wiring harness side. |
| (2)Measure the resistance between the C-132 AFS control switch connector terminal No. 4 and the body earth. OK: Continuity exists (2 Ω or less) |
Q.
Is the check result normal?
STEP 4. Wiring harness check from C-132 AFS control switch connector terminal No. 4 to body earth
Q.
Is the check result normal?
STEP 5. Connector check: C-12 AFS-ECU connector
Q.
Is the check result normal?
STEP 6. Wiring harness check from C-132 AFS control switch connector terminal No. 3 to C-12 AFS-ECU connector terminal No. 7.
| note | Prior to the wiring harness inspection, check intermediate connector C-128, and repair if necessary. |
Q.
Is the check result normal?
STEP 7. M.U.T.-III data list
- Press the AFS control switch.
|
Q.
Is the check result normal?
STEP 8. M.U.T.-III other system actuator test
- Item 13: Indicator4
Q.
Is the check result normal?