TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the DRB from the DLC.
Disconnect the PCM harness connectors.
Disconnect the TCM harness connector (if equipped).
Turn the ignition on.
Measure the voltage of the SCI Transmit (PCM) circuit at the DLC connector.
Is the voltage above 1.0 volt?
All
Yes
→ Repair the SCI Transmit (PCM) circuit for a short to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the DRB from the DLC.
Disconnect the PCM harness connectors.
Turn the ignition on.
Measure the voltage of the SCI Receive (PCM) circuit at the DLC connector.
Is the voltage above 1.0 volt?
All
Yes
→ Repair the SCI Receive (PCM) circuit for a short to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 6
6
Turn the ignition off.
Disconnect the DRB from the DLC.
Disconnect the PCM harness connectors.
Measure the resistance between the SCI Transmit (PCM) circuit and the SCI Receive
(PCM) circuit at the PCM connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the short between the SCI Transmit (PCM) and the SCI
Receive (PCM) circuits.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 7
7
Turn the ignition off.
Disconnect the PCM C2 harness connector.
Disconnect the DRB from the DLC.
Measure the resistance between ground and the SCI Receive (PCM) circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the SCI Receive (PCM) circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 8
8
Turn the ignition off.
Disconnect the PCM C2 harness connector.
Disconnect the DRB from the DLC.
Measure the resistance of the SCI Receive (PCM) circuit between the PCM C2
connector and the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 9
No
→ Repair the SCI Receive (PCM) circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
31
COMMUNICATION
*NO RESPONSE FROM PCM (SCI ONLY) - SBEC —
Continued