Inspection Procedure 26

Generator Circuit:

Connectors:

Connectors:

or PCM controls generator out put current by duty-controlling continuity between the generator G terminal (terminal No.1) and ground.

TROUBLESHOOTING HINTS (The most likely causes for this case:)
- Malfunction of the charging system.
- Short circuit in the harness generator G terminal and ECM or PCM .
- ECM or PCM failed.

DIAGNOSIS

STEP 1. Measure the v6ltage at generator intermediate connector B-13 by backprobing.

1. Do not disconnect the connector B-13.
2. Start the engine and run at idle.
3. Measure the voltage between terminal No.2 and ground by backprobing.
a. Engine: warming up
b. Radiator fan: stopped
c. Headlight switch: OFF to ON
d. Rear defogger switch: OFF to ON
e. Stoplight switch: OFF to ON
- Voltage rises by 0.2 - 3.5 volts.
4. Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the measured voltage between 0.2 and 3.5 volts?

YES: Replace the generator. Then confirm that the malfunction symptom is eliminated.
NO: Go to Step 2.

STEP 2. Check connector B-13 at generator intermediate connector for damage.

Q: Is the connector in good condition?

YES: Go to Step 3.
NO: Repair or replace it. Refer to Harness Connector Inspection. Then confirm that the malfunction symptom is eliminated.

STEP 3. Check connector B-115 at generator connector for damage.

Q: Is the connector in good condition?

YES: Go to Step 4.
NO: Repair or replace it. Refer to Harness Connector Inspection. Then confirm that the malfunction symptom is eliminated.

Connectors:

STEP 4. Check connector C-111 at ECM or connector C-112 at PCM for damage.

Q: Is the connector in good condition?

YES: Go to Step 5.
NO: Repair or replace it. Refer to Harness Connector Inspection. Then confirm that the malfunction symptom is eliminated.

Connectors:

STEP 5. Check for open circuit and short circuit to ground and harness damage between generator connector B-115 (terminal No.1) and ECM connector C-111 (terminal No.8) or PCM connector C-112 (terminal No.8) .

Q: Is the harness wire in good condition?

YES: Replace the ECM or PCM. Then confirm that the malfunction symptom is eliminated.
NO: Repair it. Then confirm that the malfunction symptom is eliminated.