Disconnect the ABS (ESC) control module and PCM/ECM connectors and inspect for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Reconnect the connectors.

Connect the GDS and go to “Current Data”.

Monitor ABS (ESC) control module values in Current Data, check and wiggle the harness(es), connector(s), and terminal(s).

Any change in the values indicates a poor connection. Was a connector problem found?

	▶ Repair the connector. Go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Signal Circuit Inspection" procedure.

IG "OFF".

Disconnect PCM/ECM and ABS Control Module connectors

Measure resistance between Vehicle speed input terminal of PCM/ECM harness connector and chassis ground.

Is resistance within specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

IG "ON".

Measure voltage between Vehicle speed input terminal of PCM/ECM harness connector and chassis ground

Is voltage within the specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

IG "OFF".

Measure resistance between Vehicle speed input terminal of PCM/ECM harness connector and Vehicle speed output terminal of ABS/ESP Control Module harness connector.

Is resistance within the specification?

	▶ Check for poor connection between PCM/ECM 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.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

IG "OFF".

Disconnect PCM/ECM and wheel speed sensor(front right) harness connector.

Measure resistance between signal '+' terminal of PCM/ECM harness connector and chassis ground.

Measure resistance between signal '-' terminal of PCM/ECM harness connector and chassis ground.

Is resistance within the specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

IG "ON".

Measure voltage between signal '+' terminal of PCM/ECM harness connector and chassis ground.

Measure voltage between signal '-' terminal of PCM/ECM harness connector and chassis ground.

Is voltage within the specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

IG "OFF".

Measure resistance between signal '+' terminal of WSS harness connector and signal '+' terminal of PCM/ECM harness connector.

Measure resistance between signal '-' terminal of WSS harness connector and signal '-' terminal of PCM/ECM harness connector.

Is resistance within the specification?

	▶ Check for poor connection between PCM/ECM 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.
	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.