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 A/T CHECK 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 A/T CHECK indicator lamp flashes to display the corresponding DTC.

Diagnostic Procedure
1. CHECK A/T CHECK 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 A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> GO TO AT-194. A/T Check 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". (Do not start engine.)
7. Wait 3 seconds.
>> GO TO 3.

3. JUDGEMENT PROCEDURE STEP 2
1. Move the selector lever to the manual shift gate side. (Manual mode switch "ON".)
2. Release brake pedal. (Stop lamp switch signal "OFF".)
3. Move the selector lever to "D" position. (Manual mode switch "OFF".)
4. Depress brake pedal. (Stop lamp switch signal "ON".)
5. Release brake pedal. (Stop lamp switch signal "OFF".)
6. Depress accelerator pedal fully and release it.
>> GO TO 4.

4. JUDGEMENT PROCEDURE STEP 2
1. Move the selector lever to "D" position. (Manual mode switch "OFF".)
2. Depress brake pedal. (Stop lamp switch signal "ON".)
3. Release brake pedal. (Stop lamp switch signal "OFF".)
4. Depress accelerator pedal fully and release it.
>> GO TO 5.

5. CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK 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","DTC P1815 MANUAL MODE 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 performing self-diagnostics or by erasing the memory using the CONSULT-II.