Manufacturer Code Charts: 2703
Navigation System DTC Troubleshooting: 2703
DTC 2703:
Aircon Diag
NOTE:
- Check the vehicle battery condition first 12 Volt Battery Test.
- This navigation DTC sets when a common error between the climate control unit and the audio-navigation unit (open or short) is detected.
- Check for B-CAN DTCs and resolve them before troubleshooting.
- Before you troubleshoot, make sure to follow the general troubleshooting information How to Troubleshoot the Navigation System.
- If the A/C system does not work properly, do the A/C system troubleshooting.
- DTC 2703 can be stored when the ignition switch is at ACCESSORY (I). When the ignition switch is in ACCESSORY (I), and the climate control is turned off, the audio-navigation unit loses communication and stores DTCs. Therefore, there is a possibility that the system is normal even though DTC 2703 is stored. Check system links with the engine running, and if it appears OK, the system is OK at this time. If it is NG, do the troubleshooting.
1. Clear the hard error code.
2. Turn the ignition switch to LOCK (0), and then back to ON (II).
3. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode Navigation System Diagnostic Mode.
4. Check the System Links.
Is the Aircon icon red?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time.
5. Do the climate control self-diagnostic function Initial Inspection and Diagnostic Overview.
Are there any DTCs indicated?
YES -
Do the indicated DTCs troubleshooting.
NO -
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation.
8. Disconnect audio-navigation unit connector D (20P).
9. Connect audio-navigation unit connector D (20P) terminals No. 5 and No. 6, and terminals No. 5 and No. 15 with jumper wires.
10. Turn the ignition switch to ON (II).
11. Press and hold the AUTO button of climate control unit, then press and hold the OFF button of climate control unit.
Is the HEAT/VENT indicator solid with the remaining icons blinking?
YES -
Go to step 12.
NO -
Go to step 16.
12. Turn the ignition switch to LOCK (0).
13. .Remove the jumper wires.
14. Disconnect climate control unit 36P connector.
15. Check for continuity between climate control unit 36P connector terminals No. 31 and No. 32, and between terminals No. 31 and No. 33.
Is there continuity?
YES -
Repair a short in the wires between the audio-navigation unit and the climate control unit.
NO -
Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
16. Turn the ignition switch to LOCK (0).
17. .Remove the jumper wires.
18. Check for continuity between body ground and audio-navigation unit connector D (20P) terminals No. 5,No. 6, and No. 15 individually.
Is there continuity?
YES -
Repair a short to body ground in the wire(s) between the audio-navigation unit and the climate control unit.
NO -
Go to step 19.
19. Check for continuity between the terminals of audio-navigation unit connector D (20P) according to the table.
Is there continuity?
YES -
Repair a short in the wires between the audio-navigation unit and the climate control unit.
NO -
Go to step 20.
20. Check for continuity between audio-navigation unit connector D (20P) and climate control unit 36P connector according to the table.
Is there continuity?
YES -
Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation. If the symptom/indication is still present, replace the climate control unit Climate Control Unit Removal/Installation.
NO -
Repair an open in the wire(s) between the audio-navigation unit and the climate control unit.