TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the DRB from the DLC.
Disconnect the PCM harness connectors.
Disconnect the ECM harness connectors.
Measure the resistance between the SCI Transmit circuit and the SCI Receive circuit
at the PCM connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the short between the SCI Transmit and the SCI Receive
circuits.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
5
5
Turn the ignition off.
Disconnect the DRB from the DLC.
Disconnect the PCM harness connectors.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the SCI Transmit circuit at the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the SCI Transmit circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
6
6
Turn the ignition off.
Disconnect the PCM C3 harness connector.
Measure the resistance of the SCI Transmit circuit between the PCM C3 connector
and the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
7
No
→
Repair the SCI Transmit circuit for an open between the splice
and the DLC.
Perform ROAD TEST VERIFICATION - VER-2.
7
If there are no possible causes remaining, view repair.
All
Repair
Replace the Engine Control Module in accordance with the Ser-
vice Information.
Perform ROAD TEST VERIFICATION - VER-2.
141
COMMUNICATION
*NO RESPONSE FROM ECM AND PCM (DIESEL ONLY) —
Continued