Fig. 79: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 3
(BLU) And Gauge Control Module 32P Connector No. 31 (BLU)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : REPLACE THE AUDIO UNIT .
NO : Repair an open in the wire(s) between the audio unit and the gauge control module.
AUDIO UNIT POWER SWITCH WILL NOT TURN OFF
Fig. 80: Audio System Symptom Troubleshooting Flowchart - Audio Unit Power Switch Will Not Turn
Off
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
Check the connectors for poor connections or loose terminals.
1. Problem verification:
ο‘
1. Turn the ignition switch to ON (II).
2. Press the POWER button off to see if the audio unit turns off.
ο‘
Does the audio unit turn off?
YES : Intermittent failure, the system is OK at this time.
NO : The failure is duplicated, go to step 2.
2. Determine possible failure area (ACC line, others):
ο‘
1. Turn the ignition switch to LOCK (0).
Does the audio unit turn off?
YES : Go to step 4.
NO : Go to step 3.
3. Shorted wire check (ACC line to power):
ο‘
1. Measure the voltage between test points 1 and 2.
Test condition IG LOCK (0)
Test circuit ACC
Test point 1 Audio unit connector A (24P) No. 24 (PUR)
Test point 2 Body ground
Fig. 81: Measuring Voltage Between Test Point Audio Unit Connector A (24P) No. 24 (PUR)
And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES : Repair a short to power in the wire between the No. B19 (7.5 A) fuse in the under-dash fuse/relay
box and the audio unit.
NO : REPLACE THE AUDIO UNIT .
4. Audio unit check:
ο‘
1. SUBSTITUTE A KNOWN-GOOD AUDIO SWITCH PANEL , and recheck.
Does the symptom go away?
YES : Replace the original audio switch panel.
NO : REPLACE THE AUDIO UNIT .
AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO
SOUND)
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