( TL19E00K761000N2703FAAT00 )

DTC Troubleshooting: 2703

DTC 2703:
Aircon Diag
NOTE:

- Check for B-CAN DTCs and resolve them before troubleshooting.
- Before you troubleshoot, make sure to follow the general troubleshooting information.
- When Soft Error of the Hard Error/Soft Error in the Error History menu is displayed in yellow, select Save first before selecting Clear.
- When abnormalities are in air conditioning, do the aircon system troubleshooting performed previously.

1. Clear the hard error code.

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

1. Go into the Diagnostic Menu and select the Self-Diagnosis Mode in the Select Diagnosis Items menu.

1. Check the System Links.

Is the Aircon icon red?

YES | - | Go to Step 5 .
NO | - | Intermittent failure, the system is OK at this time.■

1. Turn the ignition switch to LOCK (0).

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

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

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

1. Do the A/C self-Diagnostic Mode.

If the HEAT/VENT both indicator solid with the remaining icons blinking?

YES | - | Replace the navigation unit. ■
NO | - | Go to Step 10 .

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

1. Disconnect climate control unit connecter B (12P).

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

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

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.■

1. Disconnect the jumper wire.

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

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

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

Is there voltage above 0.2 V?

YES | - | Repair short to power in the wire(s) between the navigation control unit and the climate control unit.■
NO | - | Go to Step 18 .

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

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

   From terminal | To terminals
   --- | ---
   B4 (ORN) | B20 (PUR), B21 (BRN)
   B20 (PUR) | B21 (BRN)

Is there continuity?

YES | - | Repair short in the wire(s) between the navigation control unit and climate control unit.■
NO | - | Replace the climate control unit. ■