Displaying & Reading Trouble Codes

O/D OFF INDICATOR LIGHT INSPECTION
1. Turn the ignition switch to ON.
2. 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 O/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 O/D OFF indicator light blinks, a malfunction code is stored in the ECU memory.

DIAGNOSTIC TROUBLE CODE CHECK
1. Turn the ignition switch ON, but do not start the engine.
2. 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 it is OFF, the overdrive OFF light will light up continuously and will not blink.




3. Using SST, connect terminals TE1 and E1 of the DCL2 or DCL1.
SST 09843-18020




4. 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 (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.




DIAGNOSTIC CODE

HINT:
- If the malfunction returns to normal while a malfunction warning is being output, the O/D OFF indicator light stops blinking and goes off. However, the malfunction code is retained in memory until it is cleared from memory.
- If the diagnosis system outputs a malfunction code even though the O/D OFF indicator was not blinking, there is intermittent trouble. Check all the connections in the circuits corresponding to that code.
- If speed sensors No.1 and No.2 happen to fail simultaneously, the ECU will neither alert the driver by blinking the O/D OFF indicator nor record any diagnostic trouble code. It will, however, decide that the vehicle can be driven only in 1st and none of the other gears; shifting upward will then be prohibited.
- Codes 62, 63 and 64 are limited to short or open circuits in the electrical system comprised of the solenoids, wire harness, and connectors. The ECU is unable to detect mechanical trouble (sticking, for example) in the solenoid valves.
- If No.3 solenoid valve (for lock-up clutch control) fails, the ECU will not blink the O/D OFF indicator to alert the driver. It will, however, record the failure as code 64, which may be displayed during troubleshooting.