Pinpoint Test AQ: U0164:00

• Ignition ON.
• Verify there is an observable symptom present.

Is an observable symptom present? 

1. Yes:  GO to AQ2
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.

• Ignition ON.
• Using a scan tool, perform the network test.

Does the HVAC module pass the network test? 

1. Yes:  GO to AQ3
2. No:  REFER to: COMMUNICATIONS NETWORK .

• Using a scan tool, retrieve the continuous memory Diagnostic Trouble Codes (DTCs) from the HVAC module.

Is DTC U3006:16 or U3006:17 recorded? 

1. Yes: 

   REFER to: CLIMATE CONTROL SYSTEM - VEHICLES WITH: ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) .

   REFER to: CLIMATE CONTROL SYSTEM - VEHICLES WITH: DUAL AUTOMATIC TEMPERATURE CONTROL .

2. No:  GO to AQ4

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

Are any DTC recorded? 

1. Yes:  For DTC U3006:16, GO to Pinpoint Test AM 

   For DTC U3006:17, GO to Pinpoint Test AN 

2. No:  GO to AQ5

• Clear the Diagnostic Trouble Codes (DTCs).
• Wait 10 seconds.
• Repeat the IPC self-test.

Is DTC U0164:00 still present? 

1. Yes:  INSTALL a new HVAC module.

   REFER to: HEATING, VENTILATION AND AIR CONDITIONING (HVAC) CONTROL MODULE .

   CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test.

   If DTC U0164:00 is still present, INSTALL a new IPC.

   REFER to: Instrument Panel Cluster (IPC)  .

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.