Manufacturer Code Charts: 2703

Navigation System DTC Troubleshooting: 1501, 2703

DTC 1501: Aircon System Error

DTC 2703: Aircon Diag

NOTE:

- Check the vehicle battery condition first.

- 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 (With Navigation)

- DTC 1501 and/or 2703 can be stored when the ignition switch is at ACCESSORY (I). With the ignition switch is in ACCESSORY (I), the A/C unit is turned off and the navigation unit loses communication and stores DTCs. Therefore, there is a possibility that the system is normal even DTC 1501 and/or 2703 is stored. Check system links Navigation System Diagnostic Mode (With Navigation) with the engine running, and if it shows normal, the system is OK at this time. If not, do this troubleshooting.

1. Clear the hard error code. How to Troubleshoot the Navigation System (With Navigation)

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Go into the Diagnostic Menu, and select the Self-Diagnosis Mode in the Select Diagnosis Items menu. Navigation System Diagnostic Mode (With Navigation)

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. Turn the ignition switch to LOCK (0).

6. Disconnect navigation unit connector B (32P).

7. Connect navigation unit connector B (32P) terminals No. 4, No. 20, and No. 21 with a jumper wire.

8. Turn the ignition switch to ON (II).

9. Do the HVAC self-Diagnostic Mode. How to Troubleshoot the Climate Control System

Are both HEAT/VENT indicators solid with the remaining icons blinking?
YES - Replace the navigation unit. Service and Repair

NO - Go to step 10.






10. Turn the ignition switch to LOCK (0), then disconnect the jumper wire.

11. Disconnect climate control unit connector B (12P).

12. Connect climate control unit connector B (12P) terminals No. 7, No. 8, and No. 9 with a jumper wire.






13. Check for continuity between navigation unit connector B (32P) terminals No. 4, No. 20, and between terminals No. 20 and No. 21.

Are there continuity?
YES - Go to step 14.

NO - Repair open in the wire(s) between the navigation control unit and the climate control unit.






14. Disconnect the jumper wire.

15. Check for continuity between body ground and navigation unit connector B (32P) terminals No. 4, No. 20, and No. 21 individually.

Are there continuity?
YES - Repair short to body ground in the wire(s) between the navigation control unit and the climate control unit.

NO - Go to step 16.






16. Check for continuity between the terminal of navigation unit connector B (32P) according to the table.





Is there continuity?
YES - Repair short in the wire(s) between the navigation unit and climate control unit.

NO - Go to step 17.






17. Turn the ignition switch to ON (II).

18. Measure the voltage between body ground and navigation unit connector B (32P) terminals No. 4, No. 20, and No. 21 individually.

Is there voltage above 0.2 V?
YES - Repair short to power in the wire(s) between the navigation unit and the climate control unit.

NO - Replace the climate control unit. Climate Control Unit Removal/Installation (With Navigation)