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 20, cooling fan motor terminal 2 and body 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 FUSES & CIRCUIT BREAKERS .
NG: Repair or replace harness connectors.