Climate Control Power and Ground Circuit Troubleshooting
WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
- Check the No. 30(7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the fuse, and recheck.
- Disconnect audio-HVAC display panel connector B (16P).
- Turn the ignition switch ON (II).
- Measure the voltage between the No. 4 terminal of audio-HVAC display panel connector B (16P) and body ground.Fig 1: Measuring Voltage Between 4 Terminal Of Audio-HVAC Display Panel Connector B (16P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the No. 30 (7.5 A) fuse in the driver's under-dash fuse/relay box and the audio-HVAC display panel.
- Turn the ignition switch OFF.
- Check for continuity between the No. 6 terminal of audio-HVAC display panel connector B (16P) and body ground.Fig 2: Checking Continuity Between 6 Terminal Of Audio-HVAC Display Panel Connector B (16P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Check for loose wires or poor connections at audio-HVAC display panel connector B (16P). If the connections are good, substitute a known-good audio-HVAC display panel, and recheck. If the symptom/indication goes away> replace the original audio-HVAC display panel.
NO - Check for an open in the wire between the audio-HVAC display panel and body ground. If the wire is OK, check for poor ground at G503.