DTC B2969: Climate Control Unit Lost Communication with MICU (WIPSW message)
- Clear the DTC with the HDS.
- Turn the ignition switch to LOCK (0), and then to ON (II).
- Do the Self-Diagnostic Function with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ) or the climate control unit (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITHOUT THE HDS ).
- Check for DTCs.
Is DTC B2969 indicated?
YES -Go to step 5.
NO -Intermittent failure. Check for loose wires or poor connections at the gauge control module and in the climate control unit circuit.
- Select B-CAN CONTROL UNITS INFORMATION in the BODY ELECTRICAL menu.
- Select CHECK CONNECTED CONTROL UNITS in the B-CAN CONTROL UNITS 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 under-dash fuse/relay box connector Y (16P).
- Disconnect the gauge control module 32P connector.
- Check for continuity between under-dash fuse/relay box connector Y (16P) terminal No. 6 and gauge control module 32P connector terminal No. 31.Fig 1: Checking Continuity Between Under-Dash Fuse/Relay Box Connector Y (16P) Terminal No. 6 And Gauge Control Module 32P Connector Terminal No. 31
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 an open in the wire between the MICU and the gauge control module.