DTC Troubleshooting: 2703
DTC 2703:
 Aircon Diag
NOTE:
  1. Turn the ignition switch to LOCK (0), and then back to ON (II).
  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).
If the HEAT/VENT both indicator solid with the remaining icons blinking?
YES -
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 -