DTC B1205 or DTC indicator H: Climate Control Unit Lost Communication with Gauge Control Module (VSP/NE message); DTC B1206 or DTC indicator K: Climate Control Unit Lost Communication with Gauge Control Module (ECT message)
- Clear the DTC with the HDS.
- Turn the ignition switch to LOCK (0), and then back to ON (II).
- Wait for 6 seconds or more.
- 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 the DTCs.
Is DTC B1205 or H, and/or B1206 or K indicated?
YES -Go to step 6.
NO -Intermittent failure. Check for loose wires or poor connections on the gauge control module and climate control unit circuit.
- Select UNIT INFORMATION in the BODY ELECTRICAL menu.
- Select CONNECTED UNIT in the UNIT INFORMATION menu.
Is 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 8.
- Disconnect under-dash fuse/relay box connector Q (16P).
- Disconnect the gauge control module 36P connector.
- Check for continuity between under-dash fuse/relay box connector Q (16P) terminal No. 6 and the gauge control module 36P connector terminal No. 20.Fig 1: Checking Continuity Between Under-Dash Fuse/Relay Box Connector Q (16P) Terminal No. 6 And Gauge Control Module 36P Connector Terminal No. 20
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.