Through Model Year 2011

No Response from Powertrain Control Module






For a complete wiring diagram, refer to.






Test Step 1 - Test for Intermittent Condition

• Check for any TSBs related to the condition. Perform any applicable procedures outlined in the TSBs before continuing.

• Turn the ignition on.

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

• With the scan tool, select ECU view.

• 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.

• Check the totally integrated power module for any active CAN C hardware DTCs, resolve the DTCs before proceeding.

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

Yes

• Go to Test Step 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.

• Perform the Powertrain Verification Test. Refer to => [ PCM Verification Test ] PCM Verification Test

Test Step 2 - Attempt to Communicate with the PCM

• With the scan tool in ECU View, observe the status of the PCM.

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

Yes

• Perform the No Response from PCM diagnostic procedure. Refer to => [ No Response from Powertrain Control Module ] No Response from Powertrain Control Module

No

• Go to Test Step 3

Test Step 3 - CAN C Bus (+) Circuit Open






• Turn the ignition off.

• Disconnect the TIPM C1 harness connector.

• Measure the resistance of the CAN C bus (+) circuit between the TIPM connector and the appropriate terminal of the special tool #8815.

Is the resistance less than 5.0 ohms?

Yes

• Go to Test Step 4

No

• Repair the CAN C bus (+) circuit for an open.

• Perform the Powertrain Verification Test. Refer to => [ PCM Verification Test ] PCM Verification Test

Test Step 4 - CAN C Bus (-) Circuit Open






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

Is the resistance less than 5.0 ohms?

Yes

• Replace and program the PCM.

• Perform the Powertrain Verification Test. Refer to => [ PCM Verification Test ] PCM Verification Test.

No

• Repair the CAN C bus (-) circuit for an open.

• Perform the Powertrain Verification Test. Refer to => [ PCM Verification Test ] PCM Verification Test.