3.
Has a problem been found?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Power Circuit Inspection" procedure. |
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.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Power Circuit Inspection" procedure. |
Ignition Switch "OFF"
Refer to "Shop Manual" and disconnect the ECM/PCM connector.
Ignition Switch "ON"
Measure voltage of Pin No. 1(engine conrol relay "ON" power) of the ECM/PCM connector and chassis ground.
Measure voltage of Pin No. 3(engine conrol relay "ON" power) of the ECM/PCM connector and chassis ground.
Measure voltage of Pin No. 5(engine conrol relay "ON" power) of the ECM/PCM connector and chassis ground.
Specification : B+
Is the measured value withing specification?
| ▶ Go to "Ground Circuit Inspection" procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
Ignition Switch "OFF"
Disconnect battery (-) cable.
Refer to "Shop Manual" and disconnect the ECM/PCM connector.
Measure resistance of Pin No. 2(ground) of the ECM/PCM connector and chassis ground.
Measure resistance of Pin No. 4(ground) of the ECM/PCM connector and chassis ground.
Measure resistance of Pin No. 6(ground) of the ECM/PCM connector and chassis ground.
Specification : Approx. below 1Ω
Is the measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
