Accord L4-2.4L (2005)
Control Assembly: Testing and Inspection
Audio-HVAC Display Panel Power/Ground Circuit Testing
Audio-HVAC Display Panel Power and Ground Circuit Troubleshooting
1. 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.
2. Disconnect audio-HVAC display panel 22P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No.20 terminal of audio-HVAC display panel 22P connector and body ground.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the No.30 fuse in the under-dash fuse/relay box and the audio-HVAC display panel.
5. Turn the ignition switch OFF.
6. Check for continuity between the No.22 terminal of audio-HVAC display panel 22P connector and body ground.
Is there continuity?
YES - Check for loose wires or poor connections at audio-HVAC display panel 22P connector. 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.