Pinpoint Test

1. Ignition ON.
2. Verify there is an observable symptom present.

Is an observable symptom present? 

1. Yes: GO to 2  .
2. No: The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

1. Ignition ON.
2. Using a scan tool, perform a network test.
3. Carry out the network test.

Does the HVAC module pass the network test? 

1. Yes: GO to 3  .
2. No: REFER to DIAGNOSTIC ROUTINE J : The Heating Ventilation Air Conditioning (HVAC) Module Does Not Respond To The Scan Tool.

1. Using a scan tool, perform the HVAC module self-test

Is DTC U3003:16 or DTC U3003:17 recorded? 

1. Yes:

   For DATC, REFER to DIAGNOSTIC ROUTINE H : U3003:16, U3003:17.

   For EMTC, REFER to DIAGNOSTIC ROUTINE F : U3003:16, U3003:17.

2. No: GO to 4  .

1. Using a scan tool, perform the IPC self-test.

Is DTC U3003:16 or DTC U3003:17 recorded? 

1. Yes: For DTC U3003:16, REFER to Diagnostic Routine BD: U3003:16 .

   For DTC U3003:17, REFER to Diagnostic Routine BE: U3003:17 .

2. No: GO to 5  .

1. Clear the DTCs  .
2. Wait 10 seconds.
3. Repeat the IPC self-test.

Is DTC U0424:82 still present? 

1. Yes: INSTALL a new HVAC module:

   For EMTC, Refer to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE , or

   For DATC, Refer to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE .

   CLEAR the DTCs  . REPEAT the IPC self-test. If DTC U0424:82 is still present, INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.

2. No: The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.