Accord V6-3.0L Hybrid (2005)
Navigation Module: Testing and Inspection
Audio-HVAC Display Module Illumination Troubleshooting
NOTE: If the display is blank when the headlights are off, the problem is not in the illumination circuit.
1. Turn the ignition switch to the ON (II) position.
2. Turn the combination light switch ON.
3. Turn the set/reset knob on the gauge control module back and forth between full dim and full bright.
Does the problem with the illumination affect only the audio-HVAC display panel?
YES - Go to step 4.
NO - Go to B-CAN Diagnosis Test Mode A.
4. Turn the set/reset knob on the gauge control module back and forth between full dim and full bright while watching the audio-HVAC display panel
buttons, button LEDs, LCD displays.
5. Proceed with the diagnostic procedure for the appropriate symptom(s).
6. Remove the audio-HVAC display module and check for loose wires terminals or poor connections at audio unit connector A (20P).
Are all the wire terminals tight, and is audio unit connector A (20P) connected properly?
YES - Go to step 7.
NO - Repair the loose wire terminal, or properly connect audio unit connector A (20P), and recheck the symptom.
7. Turn the set/reset knob on the gauge control module to the full bright position.
8. Measure the voltage between the No. 19 and No. 20 terminals of audio unit connector A (20P).
Is there 0.1 V or less?
YES - Check connections at audio unit connector A (20P). If connections are OK substitute a known-good audio-HVAC display module and
recheck the symptom. If the symptom is gone, replace the original audio-HVAC display module.
NO - Repair open in the RED wire between the MICU and the audio-HVAC display module.
