Without Scan Tool

DIAGNOSTIC PROCEDURE WITHOUT CONSULT-II





TCM Self-diagnostic Procedure (No Tools)

Preparation





1. Turn ignition switch to "OFF" position.
2. Connect the handy type vacuum pump to the throttle opener and apply vacuum -25.3 kPa (-190 mm Hg, -7.48 in-Hg).
3. Disconnect the throttle position switch harness connector.
4. Turn ignition switch to "ON" position.
5. Check continuity of the closed throttle position switch.
Continuity should exist.
(If continuity does not exist, check throttle opener and closed throttle position switch. Then increase vacuum until closed throttle position switch shows continuity.)
6. Go to test group 1, "CHECK O/D OFF INDICATOR LAMP".

1. CHECK O/D OFF INDICATOR LAMP
1. Move A/T selector lever to "P" position. Start the engine. Warm engine to normal operating temperature.





2. Turn ignition switch to "OFF" position.
3. Wait 5 seconds.
4. Turn ignition switch to "ON" position. (Do not start engine.)
5. Does O/D OFF indicator lamp come on for about 2 seconds?





Yes or No
Yes >>GO TO 2.
No >> GO TO " 1 O/D OFF Indicator Lamp Does Not Come On".

2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to "OFF" position.
2. Turn ignition switch to "ACC" position.
3. Move A/T selector lever from "P" to "D" position.
4. Turn ignition switch to "ON" position. (Do not start engine.)
5. Depress and hold overdrive control switch (the O/D OFF indicator lamp will be "ON") until directed to release the switch.
If O/D OFF indicator lamp does not come on, go to "21. TCM Self-diagnosis Does Not Activate (PNP Overdrive Control and Throttle Position Switches Circuit Checks)".





6. Turn ignition switch to "OFF" position.
7. Turn ignition switch to "ON" position. (Do not start engine.)
8. Release the overdrive control switch (the O/D OFF indicator lamp will be "OFF").
9. Wait 2 seconds.
10. Move A/T selector lever to "2" position.
11. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be "ON").





12. Depress and hold the overdrive control switch (the O/D OFF indicator lamp will be "OFF") until directed to release the switch.
>> GO TO 3.

3. JUDGEMENT PROCEDURE STEP 2
1. Move A/T selector lever to "1" position.
2. Release the overdrive control switch.
3. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be "ON").
4. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be "OFF").





5. Depress and hold the overdrive control switch (the O/D OFF indicator lamp will be "ON") until directed to release the switch.





6. Depress accelerator pedal fully and release.
7. Release the overdrive control switch (the O/D OFF indicator lamp will begin to flash "ON" and "OFF").
>>GO TO 4.

4. CHECK SELF-DIAGNOSIS CODE





Check O/D OFF indicator lamp.
>> DIAGNOSIS END








Judgement of Self-diagnosis Code