Pinpoint Test Be: DTC U0424:82
- BE1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to BE2.
- 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.
- BE2 CHECK THE COMMUNICATION NETWORK
- Using a scan tool, perform a network test.
- Does the HVAC module pass the network test?
- Yes : GO to BE3.
- No : REFER to MODULE COMMUNICATIONS NETWORK , The HVAC Module Does Not Respond To The Scan Tool.
- BE3 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Using a scan tool, perform the IPC self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?
- Yes
: For DTC U3003:16, GO to PINPOINT TEST BF .
For DTC U3003:17, GO to PINPOINT TEST BG .
- No : GO to BE4.
- BE4 RETRIEVE THE RECORDED DTCs FROM THE HVAC MODULE SELF-TEST
- Using a scan tool, perform the HVAC module self-test.
- Are any DTCs recorded?
- Yes : REFER to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS .
- No : GO to BE5.
- BE5 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
- Using a scan tool, perform the BCM self-test.
- Are any DTCs recorded?
- Yes : REFER to the BCM DTC Chart in MULTIFUNCTION ELECTRONIC MODULES .
- No : GO to BE6.
- BE6 RECHECK THE IPC DTCs NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during the Programmable Module Installation (PMI) or the PMI may not have been carried out.
- Using a scan tool, clear the DTCs.
- 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 BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES .
- 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.