TCM Self-Diagnostic Procedure (No Tools)

1. Move selector lever to P position. Start engine and warm it up to normal engine operating temperature.
2. Turn ignition switch to OFF position.
3. Wait 5 seconds.
4. Turn ignition switch to ON position. (Do not start engine.)
   Fig 1: Identifying Gear Selector Lever Position

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5. Does O/D OFF indicator lamp come on for about 2 seconds?
   Fig 2: Identifying Indicator Lamp

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Yes or No 

1. Yes GO TO  2.
2. No: Stop procedure. Perform O/D OFF INDICATOR LAMP DOES NOT COME ON  before proceeding.

1. Turn ignition switch to OFF position.
2. Turn ignition switch to ACC position.
3. Move 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 in OFF position (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, refer to "Steps  3 and  4" in O/D OFF INDICATOR LAMP DOES NOT COME ON .
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 selector lever to 2 position.
11. Depress and release overdrive control switch in ON position until next step is completed (the O/D OFF indicator lamp will be ON).
    Fig 3: Depressing & Hold Overdrive Control Switch In Off Position

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

1. GO TO  3.

Fig 4: Depressing & Hold Overdrive Control

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1. Move 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 it.
7. Release the overdrive control switch (the O/D OFF indicator lamp will begin to flash ON and OFF).

1. GO TO  4.

Fig 5: Releasing Overdrive Control Switch

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Check O/D OFF indicator lamp. Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE .

Fig 6: Identifying Indicator Lamp

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1. DIAGNOSIS END