*NO RESPONSE FROM PCM (POWERTRAIN CONTROL MODULE) (NGC)

For a complete wiring diagram Refer to Section 8W.

Possible Causes

(A209) FUSED B(+) CIRCUITS OPEN OR SHORTED

(Z903) GROUND CIRCUITS OPEN

(F202) FUSED RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED

(F1) FUSED IGNITION SWITCH OUTPUT (UNLOCK/RUN/START) CIRCUIT OPEN OR SHORTED

(F342) FUSED ASD RELAY OUTPUT CIRCUIT OPEN OR SHORTED

(D65) CAN C BUS (+) CIRCUIT OPEN

(D64) CAN C BUS (-) CIRCUIT OPEN

POWERTRAIN CONTROL MODULE

Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

With the scan tool, select ECU View.

NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.

NOTE: Check the TIPM for any active CAN C hardware DTCs, perform DTC before proceeding.

Does the scan tool display a red X next to the module?

Yes

Go To 2

No

The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.

2. (A209) FUSED B(+) CIRCUITS OPEN OR SHORTED

Turn the ignition off.
Disconnect the PCM C1 harness connector.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes

Go To 3

No

Repair the (A209) Fused B(+) circuit for an open or short.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

3. (Z903) GROUND CIRCUITS OPEN

Using a 12-volt test light connected to 12-volts, check each (Z903) ground circuits.

Does the test light illuminate brightly for each circuit?

Yes

Go To 4

No

Repair the ground circuit for an open.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

4. (F202) FUSED RUN/START RELAY OUTPUT CIRCUIT OPEN OR SHORTED

Turn the ignition on.
Using a 12-volt test light connected to ground, check the (F202) Fused Run/Start Relay Output circuit.

Does the test light illuminate brightly?

Yes

Go To 5

No

Repair the (F202) Fused Run/Start Relay Output circuit for an open or short.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

5. (F1) FUSED IGNITION SWITCH OUTPUT (UNLOCK/RUN/START) CIRCUIT OPEN OR SHORTED

Turn the ignition on.
Using a 12-volt test light connected to ground, check the (F1) Fused Ignition Switch Output (Unlock/Run/Start) circuit.

Does the test light illuminate brightly?

Yes

Go To 6

No

Repair the (F1) Fused Ignition Switch Output (Unlock/Run/Start) circuit for an open or short.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

6. (F342) FUSED ASD RELAY OUTPUT CIRCUIT OPEN OR SHORTED

Turn the ignition on.
Using a 12-volt test light connected to ground, check the (F342) Fused ASD Relay Output circuit.

Does the test light illuminate brightly?

Yes

Go To 7

No

Repair the (F342) Fused ASD Relay Output circuit for an open or short.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

7. (D65) CAN C BUS (+) CIRCUIT OPEN

Turn the ignition off.
Disconnect the TIPM C1 harness connector.
Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM connector and the appropriate terminal of the special tool #8815.

Is the resistance below 5.0 ohms?

Yes

Go To 8

No

Repair the (D65) CAN C Bus (+) circuit for an open.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

8. (D64) CAN C BUS (-) CIRCUIT OPEN

Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM connector and the appropriate terminal of the special tool #8815.

Is the resistance below 5.0 ohms?

Yes

Replace and program the Powertrain Control Module in accordance with the service information.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

Repair the (D64) CAN C Bus (-) circuit for an open.
Perform the (NGC) POWERTRAIN VERIFICATION TEST VER - 5.