Audio system information does not display on the audio display-USB adapter control unit (without navigation, with USB adapter)
- Check the vehicle battery condition first (see BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- Check for poor connections or loose terminals at audio display-USB adapter control unit connector A (32P) and audio unit connector B (20P).
Are the connections or terminals OK?
YES -Go to step 2.
NO -Repair poor connections or loose terminals, and recheck.
- Turn the ignition switch to ON (II).
- Measure the voltage between body ground and audio display-USB adapter control unit connector A (32P) terminals No. 16 and No. 32 individually.Fig 1: Measuring Voltage Between Body Ground And Audio Display-USB Adapter Control Unit Connector A (32P) Terminals No. 16 And No. 32
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES -Go to step 4.
NO -If the +B wire does not have voltage, repair an open in the wire between the No. B15 (20 A) fuse in the under-hood fuse/relay box and the audio display-USB adapter control unit. If the ACC wire does not have voltage, repair an open in the wire between the No. C13 (7.5 A) fuse in the driver's under-dash fuse/relay box and the audio display-USB adapter control unit.
- Measure the voltage between audio display-USB adapter control unit connector A (32P) terminal No. 15 and body ground.Fig 2: Measuring Voltage Between Audio Display-USB Adapter Control Unit Connector A (32P) Terminal No. 15 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there less than 0.2 V?
YES -Go to step 5.
NO -Repair an open or high resistance in the wire between the audio display-USB adapter control unit and body ground (G501) (see AUDIO WIRE HARNESS (WITH NAVIGATION) (I) ).
- Turn the ignition switch to LOCK (0).
- Disconnect audio display-USB adapter control unit connector A (32P) and audio unit connector B (20P).
- Check for continuity between audio unit connector B (20P) and audio display-USB adapter control unit connector A (32P) according to the table.AUDIO UNIT CONNECTOR REFERENCE CHART
Audio unit connector Audio display-USB adapter control unit connector Wire color B4 A10 PUR B5 A11 RED B14 A9 LT GRN Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Go to step 8.
NO -There is an open in the wire(s) between the audio unit and the audio display-USB adapter control unit. Repair or replace the affected harness.
- Check for continuity between body ground and audio unit connector B (20P) according to the table.AUDIO UNIT CONNECTOR REFERENCE CHART
Audio unit connector Wire color B4 PUR B5 RED B14 LT GRN Is there continuity?
YES -There is a short to body ground in the wire(s) between the audio unit and the audio display-USB adapter control unit. Repair or replace the affected harness.
NO -Go to step 9.
- Check for continuity between the terminals of audio unit connector B (20P) according to the table.TERMINALS REFERENCE CHART
From terminal To terminals B4 (PUR) B5 (RED), B15 (GRY) B5 (RED) B15 (GRY) Is there continuity between any of the terminals?
YES -There is a short in the wires between the audio unit and the audio display-USB adapter control unit. Replace the affected shielded harness.
NO -Substitute a known-good audio display-USB adapter control unit (see AUDIO DISPLAY-USB ADAPTER CONTROL UNIT REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original audio display-USB adapter control unit (see AUDIO DISPLAY-USB ADAPTER CONTROL UNIT REMOVAL/INSTALLATION ). If the symptom/indication is still present, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).