Gas

P129C-INVERTER CONTROL CIRCUIT 2 HIGH (TIPM)

For a complete wiring diagram refer to Diagrams/Electrical.


- When Monitored:

With the ignition on. Battery voltage greater than 10 volts. Once the inverter switch has been turned on, the CCN sends a request to the TIPM to turn on the Inverter.

- Set Condition:

An open or shorted high condition has been detected in the Inverter Control output circuit by the TIPM. One Trip Fault. Three good trips to turn off the MIL.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.


Diagnostic Test


1. ACTIVE DTC

Ignition on, engine not running.

With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition


2. (P805) INVERTER CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.

Disconnect the Inverter Module harness connector.

Disconnect the TIPM C7 harness connector.

Turn the ignition on.

Measure the voltage of the (P805) Inverter Control Output circuit at the Inverter Module harness connector.

Is voltage present?

Yes

- Repair the short to voltage in the (P805) Inverter Control Output circuit.

No

- Go To 3


3. INVERTER MODULE

Turn the ignition off.

Reconnect the TIPM harness connector.

Using a test light connected to ground, probe the Inverter Enable Switch Signal circuit at the Inverter Module harness connector.

Using the scan tool, actuate the Inverter Enable control.


NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

- Replace the Inverter Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

No

- Go To 4


4. (P805) INVERTER CONTROL OUTPUT CIRCUIT OPEN

Turn the ignition off.

Disconnect the TIPM harness connector.

Disconnect the Inverter Module harness connector.

Measure the resistance of the (P805) Inverter Control Output circuit between the TIPM and Inverter Module harness connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Totally Integrated Power Module.
- Perform the BODY VERIFICATION TEST VER-1. Body Verification Test

No

- Repair the open in the (P805) Inverter Control Output circuit.