W/Harness Inspection

Engine Control
P050B Cold Start Ignition Timing Performance - Inspection/Repair:_:W/Harness Inspection

Terminal & Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness 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?






Power Circuit Inspection

Check voltage
1. IG "OFF" and disconnect Ignition Coil connector.
2. IG "ON".
3. Measure voltage between power terminal of ignition coil harness connector and chassis ground.

Specification :B+




4. Is the measured voltage within specifications ?





Check short to ground in harness
1. IG "OFF" and disconnect ignition coil connector and ECM connector.
2. Measure resistance between control terminal of ignition coil harness connector and chassis ground.

Specification :Infinite




3. Is the measured resistance within specification?