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?

YES

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO

▶ Go to "CAN High line Inspection" procedure .

Check for Open in harness

[ With ABS]

1) Ignition "OFF"

2) Measure resistance between terminals 7 of the PCM harness connectors and 11 of the ABS control module harness connector

3) Is resistance within the specification?

YES

▶ Go to "Check for short to ground in harness" procedure

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

[ Without ABS]

1) Measure resistance between terminals 7 of the PCM harness connectors and 2 of the vertical resistor

2) Is resistance within the specification?

YES

▶ Go to "Check for short to ground in harness" procedure

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for short to ground in harness

1) Measure resistance between terminals 7 of the PCM harness connectors and chassis ground

2) Is resistance within the specification?

YES

▶ Go to next step as below

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for short to battery in harness

1) Ignition "ON" & Engine "OFF"

2) Measure resistance between terminals 7 of the PCM harness connectors and chassis ground

3) Is voltage within the specification?

YES

▶ Go to "CAN Low Line Inspection" procedure

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for Open in harness

[ With ABS]

1) Measure resistance between terminals 6 of the PCM harness connectors and 10 of the ABS control module harness connector

2) Is resistance within the specification?

YES

▶ Go to "Check for short to ground in harness" procedure

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

[ Without ABS]

1) Measure resistance between terminals 6 of the PCM harness connectors and 1 of the vertical resistor

2) Is resistance within the specification?

YES

▶ Go to "Check for short to ground in harness" procedure

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for short to ground in harness

1) Measure resistance between terminals 6 of the PCM harness connectors and chassis ground

2) Is resistance within the specification?

YES

▶ Go to next step as below

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Check for short to battery in harness

1) Ignition "ON" & Engine "OFF"

2) Measure resistance between terminals 6 of the PCM harness connectors and chassis ground

3) Is voltage within the specification?

YES

▶ Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure

NO

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.