Body No. 4 Ecu Power Source Circuit
- Check condition of MPX-B3 and LUG J/B fuses. See FUSE LOCATIONS (BODY NO. 4 ECU) table. If fuses are okay, go to next step. If fuse(s) are faulty, replace appropriate fuse and retest system operation.
- Disconnect body No. 4 ECU connector. Measure voltage between body No. 4 ECU connector terminal GND and terminals MPX-B and HIC. See PIN VOLTAGE TESTS . Turn ignition off. If 10-14 volts are not present, go to next step. If 10-14 volts are present, go to next test listed in appropriate SYMPTOM DIAGNOSIS table under TROUBLE SHOOTING .
- Check wiring between body No. 4 ECU and ground. Repair wiring as necessary. If wiring is okay, check wiring between body No. 4 ECU and battery. Repair as necessary.
FUSE LOCATIONS (BODY NO. 4 ECU)
| Fuse | Location |
|---|---|
| LUG J/B | Right Side Of Engine Compartment In Fuse/Relay Block |
| MPX-B3 | Passenger-Side Junction Block |