TCM Self-Diagnostic Procedure (No Tools)

TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)

Description
In the unlikely event of a malfunction in the electrical system, when the ignition switch is switched ON, the O/D "OFF" indicator lamp lights up for 2 seconds, then flashes for 8 seconds. If there is no malfunction, when the ignition switch is turned ON, the indicator lamp lights up for 2 seconds. As a method for locating the suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction location is output and the O/D "OFF" indicator lamp flashes to display the corresponding DTC.

Diagnostic Procedure
1. CHECK O/D "OFF" INDICATOR LAMP
1. Start the engine with selector lever in "P" position. Warm engine to normal operating temperature.
2. Turn ignition switch "ON" and "OFF" at least twice, then leave it in the "OFF" position.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Do not start engine.) Does O/D "OFF" indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> GO TO AT-184, "O/D OFF Indicator Lamp Does Not Come On". O/D Off Indicator Lamp Does Not Come on
2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch OFF.
2. Push shift lock release button.
3. Move selector lever from "P" to "D" position.
4. Release accelerator pedal. (Set the closed throttle position signal ON.)
5. Depress brake pedal. (Stop lamp switch signal ON.)
6. Turn ignition switch ON.
7. Wait 3 seconds.
8. Move the selector lever from "D" to "3" position.
9. Release brake pedal. (Stop lamp switch signal OFF.)
10. Move the selector lever from "3" to "2" position.
11. Depress brake pedal. (Stop lamp switch signal ON.)
12. Depress accelerator pedal fully and release it.
>> GO TO 3.
3. CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp.
Refer to "Judgement Self-diagnosis Code".
If the system does not go into self-diagnostics. Refer to "DTC P0705 PARK/NEUTRAL POSITION SWITCH", "CLOSED THROTTLE POSITION AND WIDE OPEN THROTTLE POSITION CIRCUIT", "BRAKE SIGNAL CIRCUIT".
>> DIAGNOSIS END

Judgement Self-diagnosis Code





If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.

Erase Self-diagnosis
^ In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is stored into the control unit as necessary during use by the user. This memory is not erased no matter how many times the ignition switch is turned "ON" and OFF.
^ However, this information is erased by turning ignition switch "OFF" after executing self-diagnostics or by erasing the memory using the CONSULT-II