Diagnosis System

WINDSHIELD / WINDOWGLASS: POWER WINDOW CONTROL SYSTEM:

DIAGNOSIS SYSTEM

1. CHECK DLC3






(a) The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with ISO 15031-3 and matches the ISO 15765-4 format.





NOTE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors.
If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.

(b) Connect the cable of Techstream to the DLC3, turn the ignition switch to the ON position and attempt to use Techstream. If the screen displays a communication error message, a problem exists in the vehicle side or tester side.
HINT:
- If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself. Consult the service department listed in the tool's instruction manual.

2. INSPECT BATTERY VOLTAGE
(a) Check the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, replace the battery before proceeding.
3. CHECK DIAGNOSIS





(a) Turn the ignition switch ON.
(b) Operate the driver side switch of the master switch.
(c) Check the blinking pattern of the AUTO light as shown in the illustration.





(1) If pattern (A) is displayed, reset power window regulator motor.
(2) If pattern (B) or (C) is displayed, check the wire harness.
(3) If the normal pattern is displayed, replace the multiplex network master switch.