Pinpoint Test BB: DTC U0424:82

BB1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify there is an observable symptom present.
- Is an observable symptom present?
- Yes: GO to BB2 .
- 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.
BB2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the HVAC module pass the network test?
- Yes: GO to BB3 .
- No: REFER to MODULE COMMUNICATIONS NETWORK .
BB3 RETRIEVE THE RECORDED DTCs FROM THE HVAC MODULE SELF-TEST
- Check for recorded DTCs from the HVAC module self-test
- Is DTC U3003:16 or DTC U3003:17 recorded?
- Yes: CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS .
- No: GO to BB4 .
BB4 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Check for recorded DTCs from the IPC self-test
- Is DTC U3003:16 or DTC U3003:17 recorded?
- Yes: For DTC U3003:16, GO to PINPOINT TEST BC . For DTC U3003:17, GO to PINPOINT TEST BD .
- No: GO to BB5 .
BB5 RECHECK THE IPC DTCs
- Clear the DTCs.
- Wait 10 seconds.
- Repeat the IPC self-test.
- Is DTC U0424:82 still present?
- Yes: INSTALL a new HVAC module. REFER to CLIMATE CONTROL . 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.
- 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.