Procedure A
- CHECK POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect IPDM E/R harness connector E120.
- Check voltage between IPDM E/R terminal 22 and ground with CONSULT-II or tester.
Voltage: Battery voltage
OK or NG
- OK : GO TO 3.
- NG : GO TO 2.
- DETECT MALFUNCTIONING PART
Check the following.
- 40A fusible link
- Harness for open or short between IPDM E/R and battery
- : Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN OR SHORT
- Disconnect cooling fan motor harness connector.
- Check harness continuity between cooling fan motor terminal 1 and IPDM E/R terminal 24, cooling fan motor terminal 2 and ground.
Refer to WIRING DIAGRAM .
Continuity should exist.
- Also check harness for short to ground and short to power.
OK or NG
- OK : GO TO 4.
- NG : Repair open circuit or short to ground or short to power in harness or connectors.
- CHECK COOLING FAN MOTOR
Refer to "COMPONENT INSPECTION ".
OK or NG
- OK : GO TO 5.
- NG : Replace cooling fan motor.
- CHECK INTERMITTENT INCIDENT
Perform "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
OK or NG
- OK : Replace IPDM E/R. Refer to "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) ".
- NG : Repair or replace harness connectors.