W/Harness Inspection
Terminal and connection inspection
1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage.
3. Has a problem been found?
ETC Output 1 Circuit Inspection
Check for Short to Ground in ETC Output 1 Circuit
1. IG KEY OFF.
2. Disconnect PCM and ETC Connector.
3. Measure resistance between ETC Output 1 terminal of ETC harness connector and chassis ground.
Specification : Infinite
4. Is resistance within specification?
Check for Short to Power in ETC Output 1 Circuit
1. IG KEY OFF.
2. Disconnect ETC connector.
3. IG KEY ON.
4. Measure voltage between ETC Output 1 terminal of ETC harness connector and chassis ground.
Specification : Approx. 0V
5. Is voltage within specification?
Check for Open in ETC Output 1 Circuit
1. IG KEY OFF.
2. Disconnect ETC harness connector and PCM harness connector.
3. Measure resistance between both ends of ETC Output 1 line.
Specification : Below 1 Ohm.
4. Is resistance within specification?
ETC Output 2 Circuit Inspection
Check for Short to Ground in ETC Output 2 Circuit
1. IG KEY OFF.
2. Disconnect PCM and ETC Connector.
3. Measure resistance between ETC Output 2 terminal of ETC harness connector and chassis ground.
Specification : Infinite
4. Is resistance within specification?
Check for Short to Power in ETC Output 2 Circuit
1. IG KEY OFF.
2. Disconnect ETC connector.
3. IG KEY ON.
4. Measure voltage between ETC Output 2 terminal of ETC harness connector and chassis ground.
Specification : Approx. 0V
5. Is voltage within specification?
Check for Open in ETC Output 2 Circuit
1. IG KEY OFF.
2. Disconnect ETC harness connector and PCM harness connector.
3. Measure resistance between both ends of ETC Output 2 line.
Specification : Below 1 Ohm.
4. Is resistance within specification?
