Maxima Forums - View Single Post - CHECK ENGINE LIGHT Diagnosis (If "trouble" lights are on, read here first!)

*clee130* · 08-02-2002, 09:13 AM

My OD light is blinking, what does that mean?

AT diagnostic
__________________________________________________ ________________

95-97
1. Start engine and warm to normal operating temp with O/D off.
2. Turn ignition swith to off postiton wait 5 sec.
3. Turn ignition switch to the ACC position.
4. Put O/D to ON.
5. Move shifter to P, turn ignition on but don't start engine.
6. The OD light should come on for about 2 secs.
a. if light does not come on somthing is wrong with the trans. computer.
b. if light comes on proceed to no 7.
7. Turn ignigton key to off.
8. Turn ignition key to on, don't start engnie.
9. Move shift lever to D, trun ignition to off.
10. Put O/D switch to off position.
11. Turn ignition off.
12. Put O/D to off, turn ignition ON wait 2sec and move shifter to the 2 position.
13. Put O/D to on, move shifter to 1 position.
14. Put O/D to off, depress accelerator all the way to floor and release.
15. The computer is now in output mode and will start displaying the codes.

There’s one long flash that signifies the start of the sequence. Following
should be 10 short flashes. Then it
repeats.
Remember the first long flash indcates the start of the sequence followed by
10.

All 10 flashes the same = No error codes read at this time
1st flash longer than others = Revolution sensor is shorted or disconnected.
2nd flash longer than others = Speed sensor circuit is shorted or disconnected.
3rd flash longer than others = Throttle sensor circuit is shorted or
disconnected.
4th flash longer than others = Shift solenoid “A” circuit is shorted or
disconnected
5th flash longer than others = Shift solenoid “B” circuit is shorted or
disconnected
6th flash longer than others = Overrun clutch solenoid circuit is shorted or
disconnected
7th flash longer than others = Lock-up solenoid circuit is shorted or
disconnected
8th flash longer than others = Fluid temperature sensor is disconnected or A/T
control unit power source
circuit is damaged.
9th flash longer than others = Engine revolution signal circuit is shorted or
disconnected
10th flash longer than others = Line pressure solenoid circuit is shorted or
disconnected

All the same with no long start flash = Battery low, been disconnected, or
control unit has just been
reconnected.

OMG! My overdrive light is blinking!

This Transmission Control Module self-diagnostic procedure information was abstracted from the '99 Maxima factory service manual. It applies to '98 and '99 models. Plain Jane (my '99 GXE) is a 5-speed so this procedure has not been personally tested.

1) Move the shift selector to Park.
Start the engine and let it run until it reaches normal operating temperature.

2) Turn the ignition switch OFF.

3) Wait at least five seconds.

4) Turn the ignition switch ON but do not start the engine.

5) The O/D OFF indicator lamp should turn on for about two seconds.
If it does not, stop here because the rest of this procedure won't work.

6) Turn the ignition switch OFF.

7) Turn the ignition switch to ACC.

8) Move the shift selector from Park to Drive.

9) Turn the ignition switch ON but do not start the engine.

10) Press and hold the O/D OFF button.
Continue to press the O/D OFF button until step 13 (below).
The O/D OFF indicator lamp should be on.
If not, stop here because the rest of this procedure won't work.

11) Turn the ignition switch OFF.

12) Turn the ignition switch ON but do not start the engine.

13) Release the OD/OFF button.
The O/D OFF indicator lamp will be off.

14) Wait two seconds.

15) Move the shift selector from Drive to 2.

16) Press and release the O/D OFF button.
The O/D OFF indicator lamp will be on.

17) Press and hold the O/D OFF button.
Continue to press the O/D OFF button until step 19 (below).
The O/D OFF indicator lamp should be off.

18) Move the shift selector from 2 to 1.

19) Release the OD/OFF button.

20) Press and release the O/D OFF button.
The O/D OFF indicator lamp will be on.

21) Press and release the O/D OFF button.
The O/D OFF indicator lamp will be off.

22) Press and hold the O/D OFF button.
Continue to press the O/D OFF button until step 24 (below).
The O/D OFF indicator lamp should be on.

23) Press the gas pedal to the floor and then release it.

24) Release the OD/OFF button.

25) The O/D OFF indicator lamp will exhibit a sequence of flashes.
The first flash is distinctly longer than the others.
Subsequent flashes are very short and these are called Judgement
Flickers.
Count those JFs and watch for one which is twice as long as the others.

Interpreting Judgement Flickers...

JF0) All JFs are short.
All circuits which can be confirmed by this self-diagnosis procedure are okay.

JF1) The 1st JF is longer than the others.
The Revolution Sensor is short-circuited or disconnected.

JF2) The 2nd JF is longer than the others.
The Vehicle Speed Sensor is short-circuited or disconnected.

JF3) The 3rd JF is longer than the others.
The Throttle Position Sensor is short-circuited or disconnected.

JF4) The 4th JF is longer than the others.
The Shift Solenoid A circuit is short-circuited or disconnected.

JF5) The 5th JF is longer than the others.
The Shift Solenoid B circuit is short-circuited or disconnected.

JF6) The 6th JF is longer than the others.
The Overrun Clutch Solenoid Valve circuit is short-circuited or disconnected.

JF7) The 7th JF is longer than the others.
The Torque Converter Solenoid Valve circuit is short-circuited or disconnected.

JF8) The 8th JF is longer than the others.
The ATF Temperature Sensor is disconnected or the TCM power source circuit is damaged.

JF9) The 9th JF is longer than the others.
The Engine Speed circuit is short-circuited or disconnected.

JF10) The 10th JF is longer than the others.
The Line Pressure Solenoid Valve circuit is short-circuited or disconnected.

If the O/D OFF indicator lamp exhibits a series of long flashes, these
are not Judgement Flickers.
This condition indicates a problem with the battery.
The battery may ...
- be discharged
- have been disconnected for a long time
- be connected with reversed polarity

If the O/D OFF indicator lamp stays on continuously, this is not a Judgement Flicker. This condition indicates any of these conditions ...
- PNP switch is disconnected
- O/D OFF button circuit is damaged
- Throttle Position Sensor circuit is disconnected
- Transmission Control Unit is damaged

I would be worried about your tranny...be ready for a big repair.

08-02-2002, 09:13 AM	#2
clee130 Mod who drive a 5-cyl car 95 Maxima GXE Join Date: Oct 2000 iTrader: (0) Posts: 9,163	My OD light is blinking, what does that mean? AT diagnostic __________________________________________________ ________________ 95-97 1. Start engine and warm to normal operating temp with O/D off. 2. Turn ignition swith to off postiton wait 5 sec. 3. Turn ignition switch to the ACC position. 4. Put O/D to ON. 5. Move shifter to P, turn ignition on but don't start engine. 6. The OD light should come on for about 2 secs. a. if light does not come on somthing is wrong with the trans. computer. b. if light comes on proceed to no 7. 7. Turn ignigton key to off. 8. Turn ignition key to on, don't start engnie. 9. Move shift lever to D, trun ignition to off. 10. Put O/D switch to off position. 11. Turn ignition off. 12. Put O/D to off, turn ignition ON wait 2sec and move shifter to the 2 position. 13. Put O/D to on, move shifter to 1 position. 14. Put O/D to off, depress accelerator all the way to floor and release. 15. The computer is now in output mode and will start displaying the codes. There’s one long flash that signifies the start of the sequence. Following should be 10 short flashes. Then it repeats. Remember the first long flash indcates the start of the sequence followed by 10. All 10 flashes the same = No error codes read at this time 1st flash longer than others = Revolution sensor is shorted or disconnected. 2nd flash longer than others = Speed sensor circuit is shorted or disconnected. 3rd flash longer than others = Throttle sensor circuit is shorted or disconnected. 4th flash longer than others = Shift solenoid “A” circuit is shorted or disconnected 5th flash longer than others = Shift solenoid “B” circuit is shorted or disconnected 6th flash longer than others = Overrun clutch solenoid circuit is shorted or disconnected 7th flash longer than others = Lock-up solenoid circuit is shorted or disconnected 8th flash longer than others = Fluid temperature sensor is disconnected or A/T control unit power source circuit is damaged. 9th flash longer than others = Engine revolution signal circuit is shorted or disconnected 10th flash longer than others = Line pressure solenoid circuit is shorted or disconnected All the same with no long start flash = Battery low, been disconnected, or control unit has just been reconnected. OMG! My overdrive light is blinking! This Transmission Control Module self-diagnostic procedure information was abstracted from the '99 Maxima factory service manual. It applies to '98 and '99 models. Plain Jane (my '99 GXE) is a 5-speed so this procedure has not been personally tested. 1) Move the shift selector to Park. Start the engine and let it run until it reaches normal operating temperature. 2) Turn the ignition switch OFF. 3) Wait at least five seconds. 4) Turn the ignition switch ON but do not start the engine. 5) The O/D OFF indicator lamp should turn on for about two seconds. If it does not, stop here because the rest of this procedure won't work. 6) Turn the ignition switch OFF. 7) Turn the ignition switch to ACC. 8) Move the shift selector from Park to Drive. 9) Turn the ignition switch ON but do not start the engine. 10) Press and hold the O/D OFF button. Continue to press the O/D OFF button until step 13 (below). The O/D OFF indicator lamp should be on. If not, stop here because the rest of this procedure won't work. 11) Turn the ignition switch OFF. 12) Turn the ignition switch ON but do not start the engine. 13) Release the OD/OFF button. The O/D OFF indicator lamp will be off. 14) Wait two seconds. 15) Move the shift selector from Drive to 2. 16) Press and release the O/D OFF button. The O/D OFF indicator lamp will be on. 17) Press and hold the O/D OFF button. Continue to press the O/D OFF button until step 19 (below). The O/D OFF indicator lamp should be off. 18) Move the shift selector from 2 to 1. 19) Release the OD/OFF button. 20) Press and release the O/D OFF button. The O/D OFF indicator lamp will be on. 21) Press and release the O/D OFF button. The O/D OFF indicator lamp will be off. 22) Press and hold the O/D OFF button. Continue to press the O/D OFF button until step 24 (below). The O/D OFF indicator lamp should be on. 23) Press the gas pedal to the floor and then release it. 24) Release the OD/OFF button. 25) The O/D OFF indicator lamp will exhibit a sequence of flashes. The first flash is distinctly longer than the others. Subsequent flashes are very short and these are called Judgement Flickers. Count those JFs and watch for one which is twice as long as the others. Interpreting Judgement Flickers... JF0) All JFs are short. All circuits which can be confirmed by this self-diagnosis procedure are okay. JF1) The 1st JF is longer than the others. The Revolution Sensor is short-circuited or disconnected. JF2) The 2nd JF is longer than the others. The Vehicle Speed Sensor is short-circuited or disconnected. JF3) The 3rd JF is longer than the others. The Throttle Position Sensor is short-circuited or disconnected. JF4) The 4th JF is longer than the others. The Shift Solenoid A circuit is short-circuited or disconnected. JF5) The 5th JF is longer than the others. The Shift Solenoid B circuit is short-circuited or disconnected. JF6) The 6th JF is longer than the others. The Overrun Clutch Solenoid Valve circuit is short-circuited or disconnected. JF7) The 7th JF is longer than the others. The Torque Converter Solenoid Valve circuit is short-circuited or disconnected. JF8) The 8th JF is longer than the others. The ATF Temperature Sensor is disconnected or the TCM power source circuit is damaged. JF9) The 9th JF is longer than the others. The Engine Speed circuit is short-circuited or disconnected. JF10) The 10th JF is longer than the others. The Line Pressure Solenoid Valve circuit is short-circuited or disconnected. If the O/D OFF indicator lamp exhibits a series of long flashes, these are not Judgement Flickers. This condition indicates a problem with the battery. The battery may ... - be discharged - have been disconnected for a long time - be connected with reversed polarity If the O/D OFF indicator lamp stays on continuously, this is not a Judgement Flicker. This condition indicates any of these conditions ... - PNP switch is disconnected - O/D OFF button circuit is damaged - Throttle Position Sensor circuit is disconnected - Transmission Control Unit is damaged I would be worried about your tranny...be ready for a big repair. Last edited by phenryiv1; 01-11-2008 at 12:58 PM.