W/Harness Inspection

Tire Pressure Monitoring
C1127 TPMS ECU Battery Voltage High - Inspection/Repair:_:W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminal condition. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
3. Has a problem been found?






Charging System Inspection

1. Engine "ON"
2. headight and Rear Defrost "ON".
3. Measure voltage between terminal (+) and (-) of battery maintaining ENG. RPM at 2,500RPM(idle) over 2 minutes.

Specification :More than 10 [V]

4. Is the measured voltage within specifications?






Power Circuit Inspection

Open or Short Check
1. Ignition "OFF"
2. Disconnect TPMS ECU connector.
3. Engine "ON", headight and Rear Defrost "ON".
4. Measure voltage between battery power terminal of TPMS ECU harness connector and chassis ground maintaining ENG. RPM at 2,500RPM(idle) over 2 minutes.

Specification :More than 10 [V]




5. Is the measured voltage within specifications?






Ground Circuit Inspection

Open or Short Check
1. Ignition "OFF"
2. Disconnect TPMS ECU connector.
3. Measure resistance between ground terminal of TPMS ECU harness connector and chassis ground.

Specification :Approx. 1.0 Ohms




4. Is the measured resistance within specifications?