Without Scan Tool

DIAGNOSIS SYSTEM
The Electrical system has built-in self-diagnostic functions. If the malfunction occurs in the system,the Engine Control Module (ECM) stores the malfunction code in memory and the O/D OFF (Overdrive OFF) indicator light blinks to inform the driver. The diagnostic trouble code stored in memory can be read out by the following procedure.

O/D OFF INDICATOR LIGHT INSPECTION
- Turn the ignition switch to ON.




- Check if the O/D OFF indicator light lights up when the O/D main switch is pushed out to OFF and goes off when the O/D main switch is pushed in to ON.

HINT:
- If the 0/D OFF indicator light does not light up or stay on all the time, carry out the check for "O/D OFF Indicator Light Circuit".
- If the 0/D OFF indicator light blinks, a malfunction code is stored in the ECM memory.

HOW TO DISPLAY AND READ DIAGNOSTIC TROUBLE CODES
- Turn the ignition switch ON, but do not start the engine.
- Push in the O/D main switch to ON.

HINT: Warning and diagnostic trouble codes can be read only when the overdrive switch is ON. If OFF, the overdrive OFF light will light continuously and will not blink.




- Using SST, connect terminals TE1 and E1 of the DLC2 or DLC1.
SST 09843-18020




- Read the diagnostic trouble code indicated by the number of times the O/D OFF indicator light blinks.

HINT: If the system is operating normally, the light will blink 2 times per second.




The malfunction code is indicated as shown in the illustration on the left (Diagnostic trouble code "42" is shown as an example).

HINT: When 2 or more malfunction codes are stored in memory, the lower-numbered code is displayed first. If no diagnostic trouble code is output, or if a diagnostic trouble code is output even though no diagnostic trouble code output operation is performed, check the TE1 terminal circuit.