Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
NOTE: Look closely at the temperatures at which this DTC set. Low battery voltage can also cause excessive current draw in very hot and very cold ambient temperatures. Make sure the battery can pass a load test before continuing.
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Operate the Inverter switch several times.
4. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go to 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. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK (P805) INVERTER ENABLE SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 1: CHECKING INVERTER ENABLE SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the TIPM C7 harness connector.
3. Disconnect the Inverter Module harness connector.
4. Inspect the wiring connections for corrosion and repair as necessary.
5. Measure the resistance of the (P805) Inverter Enable Switch Signal circuit between ground and the Inverter Module harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (P805) Inverter Enable Switch Signal circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 3
CHECK (P805) INVERTER ENABLE SWITCH SIGNAL CIRCUIT FUNCTION

Fig 2: CHECKING INVERTER ENABLE SWITCH SIGNAL CIRCUIT FUNCTION
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Reconnect the TIPM C7 harness connector.
3. Using a 12-volt test light connected to ground, probe the (P805) Inverter Enable Switch Signal circuit at the Inverter Module harness connector.
4. Turn the ignition on.
5. 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 in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .