P129C

P129C - Inverter Control Circuit 2 High

For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON and the 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.






Test Step 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 Test Step 2.

No

• The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Inverter Control Output Circuit Short to Voltage

• Turn the ignition OFF.

• Disconnect the inverter module harness connector.

• Disconnect the TIPM harness connector.

• Turn the ignition ON.

• Measure the voltage of the inverter control output circuit at the inverter module harness connector.

Is voltage Present?

Yes

• Repair the short to voltage in the inverter control output circuit.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 3.

Test Step 3 - Inverter Module

• Turn the ignition OFF.

• Connect the TIPM harness connector.

• Using a Test lamp 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.

• The test lamp should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Does the test lamp illuminate brightly?

Yes

• Replace the inverter module.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 4.

Test Step 4 - 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 inverter control output circuit between the TIPM and inverter module harness connector.

Is the resistance less than 5.0 ohms?

Yes

• Replace the totally integrated power module.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Repair the open in the inverter control output circuit.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior