DTC U0155: Climate Control Unit Lost Communication with Gauge Control Module
WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A (see
TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE D
)
- Clear the DTC with the HDS
- Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode, and then the ON mode
- Do the self-diagnostic function with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS )
- Check for DTCs
Is DTC U0155 indicated?
YES -Go to step 5
NO -The system is OK at this time Check for loose wires or poor connections on the B-CAN lines between the gauge control module and the climate control unit
- Select UNIT INFORMATION in the BODY ELECTRICAL menu
- Select CONNECTED UNIT in the UNIT INFORMATION menu
Is the gauge control module detected?
YES -Substitute a known-good climate control unit, and recheck If the symptom/indication goes away, replace the original climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION )
NO -Go to step 7
- Disconnect the gauge control module 32P connector
- Disconnect climate control unit connector C (20P)
- Check for continuity between the following terminals of the gauge control module 32P connector and climate control unit connector C (20P)
20P 32P
No 7 No 25
No 8 No 26
Fig 1: Checking Continuity Between Terminals Of Gauge Control Module 32P Connector And Climate Control Unit Connector C (20P)Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Go to the gauge control module input test (see GAUGE CONTROL MODULE INPUT TEST )
NO -Repair open in the wire(s) between the climate control unit and the gauge control module