Navigation Communication Line Circuit Troubleshooting
- Operate the climate control system in several modes.
Is the climate control system OK?
YES -Go to step 2.
NO -Do the Self-Diagnostic Function with the HDS (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITH THE HDS ) or the climate control unit (see DISPLAYING SENSOR INPUTS AT THE CLIMATE CONTROL UNIT ).
- Do the system links (see
SYSTEM LINKS
).
Is the A/C or Mic icon red?
YES -
- If A/C icon is red, go to step 3.
- If Mic icon is red, go to "voice control does not work/respond" in the navigation system symptom troubleshooting (see VOICE CONTROL DOES NOT WORK/RESPOND ).
NO -Go to step 9.
- Turn the ignition switch to LOCK (0).
- Disconnect audio-navigation unit connector D (20P).
- Disconnect climate control unit connector B (12P).
- Check for continuity between the following terminals of climate control unit connector B (12P) and audio-navigation unit connector D (20P).
12P: 20P:
No. 7 No. 5
No. 8 No. 4
No. 9 No. 14
Fig 1: Checking Continuity Between Terminals Of Climate Control Unit Connector B (12P) And Audio-Navigation Unit Connector D (20P)Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Go to step 7.
NO -Repair an open in the wire(s) between the climate control unit and the audio-navigation unit.
- Check for continuity between body ground and climate control unit connector B (12P) terminals No. 7, No. 8, and No. 9 individually.Fig 2: Checking Continuity Between Body Ground And Climate Control Unit Connector B (12P) Terminals No. 7, No. 8 And No. 9
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair a short to body ground in the wire(s) between the climate control unit and the audio-navigation unit.
NO -Go to step 8.
- Reconnect climate control unit connector B (12P).
- Connect the audio-navigation unit connector D (20P) terminals No. 4, No. 5, and No. 14 with jumper wires.
- Turn the ignition switch to ON (II).
- Press and hold the AUTO button, then press and hold the ON/OFF button, then turn the ignition switch to ON (II).
- Check the mode indicator displaying in the audio-navigation switch panel display.
Is the HEAT/VENT indicator solid with the remaining icons blinking?
YES -Do the Unit Check with the navigation system (see UNIT CHECK (QUICK CHECK) ).
NO -Substitute a known-good climate control unit, and recheck. If the symptom goes away, replace the original climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ).