1993 Nissan Pathfinder Logo

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Posted on Feb 10, 2018

93 pathfinder, wiring short, ecu damage? When i turn the key both green and red lights stay on on the ecu under passengers seat. will not start. had a hole in the floor wiring going by passengers door started to smoke. tried to pull codes, got code 55 (no errors) is there a fuse or resistor?

5 Related Answers

Anonymous

  • 120 Answers
  • Posted on Aug 23, 2008

SOURCE: Car won't start

Hi, does the alarm shut off when you unlock the passenger door?
If it does not I will give you a test that you can do.
1. disconnect the harness anti-theft control module. (loctaion depend were you live USA next to fuse panel Canadian models above the glove box.) Check the continuity between Light Green/Black wire and Black wire of the anti-theft control module.
2. Continuity should not be there with the door lock in, lock or neutral position. With the door lock in-between lock and neutral position (any door) continuity should be present.
3. If continuity is as specified replace the anti-theft control module. If continuity is not as specified, check operation of the door lock switches.I will add that test at bottom.
4. If the door lock switches are ok check the continuity og LIGHT/BLACK wires between anti-theft control module and door lock switches. Check Continuity of BLACK wire between door lock switches and ground. Continuity should be present if Continuity is not present repair harness or connectors.
5. If Continuity is present, check continuity LIGHT GREEN and BLACK wire of anti-theft control module. Continuity should not be present with trunk lock in lock or neutral position. With trunk lock in-between lock and neutral position, Continuity should be present.
6. If Continuity is as specified replace anti-theft control module. If Continuity is not as specified, check operation of truck lock switches. If necessary replace trunk lock switch.
7. If trunk lock switch is ok, check Continuity og LIGHT GREEN wire between anti-theft control module and trunk lock switch. Check Continuity of BLACK wire between trunk lock switch and ground. Continuity should be present. If Continuity is not present repair harness or connectors.

DOOR LOCK SWITCHES
Disconnect 4-pin door lock switch connect (left and right front doors) With door lock in neutral, full lock or full unlock position, there should be no continuity between any terminal and BLACK wire terminal. Continuity should exist between LIGHT GREEN?WHITE wire and BLACK wire terminals with door lock in-between neutral and full lock position. Continuity should exist between LIGHT GREEN/BLACK wire and BLACK wire terminals with door lock in-between neutral and full unlock positions. If continuity is not as described, replaced door lock switch.

Hope this help its a place to start. let me know if you need anything else.

Cheers

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Anonymous

  • 1 Answer
  • Posted on Oct 30, 2008

SOURCE: key won't turn - key light is green

Steering is in a bind were wireless key cannot activate. Move steering wheel to the left and right while trying to start. I had the same problem and this is what the Nissan dealership told me to do. I't worked like a dream.


Hopped this helped

Anonymous

  • 1 Answer
  • Posted on Dec 11, 2008

SOURCE: headlights 1991 nissan pathfinder

hammerhamcd
Your year Pathfinder, as mine, had a slew of bad head light switches. The headlight switches caused a slurry of intermediate nightmares for a lot of customers. Many complaints included:
1. My head lights sometimes turn off upon switching from low to high beams.
2. My lights turn completely off when I switch to high beams.
3. My lights flicker when I switch from high to low beams and vise verse.
4. My lights sometime wont turn on at all.
5. My lights go on and off on bumpy roads.
6. My lights sometimes come on by themselves.
All of these different but similar complaints contribute to the infamous head light switch. There has even been reports of continuous dead battery's due to the head light switch turning the lights on and off intermittently and eventually deadening the battery.
The light switch is relatively easy to replace. Simply remove the the two upper and lower steering column covers, disconnect the two wiring harness bulk head connectors, a couple screws and wallah.
Remember your safety and always dissconncet your your battey upon electrical repairs.
Just last week I bought a new head light switch for about $70.00. I would highly recommend buying a new head headlight switch and not buying a junkyard special. You will likely be buying another faulty switch.
Good luck!!!!
Triple H Outfitters







goalie39

Ed

  • 479 Answers
  • Posted on Apr 23, 2009

SOURCE: Need New Seats

Take it to an auto upolstery shop, they may be able to repair the damage, or recover the seat.
Failing that, you can check the auto wreckers, and finally the dealer.

Hope this is of some help.
Ed

Anonymous

  • 1 Answer
  • Posted on Jul 21, 2009

SOURCE: 1994 Nissan Pathfinder won't start, even jumping it.

I had a similar problem w/ my 94 Pathfinder. The problem was a cheap security system that was offered in that year model and the wiring between the ignition and the starter was run through this system. The dealership was able to by pass the security system and this fixed the problem. For years other mechanics told me it was the starter but I knew it was something else.

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My nissan 95 truck won't start. the battery is ok. once it wouldn't start and i put it in neutral then back to park and it started right up. where is the neutral safety switch located? I heard...

I think your reverse to park trick was a fluke,, I assume it turns over but since it is a 1995 you dont have a OBD 2 in the vehicle.
How to pull ECU error codes for 87-95 Pathfinders and Hardbody pickups:


The ECU is under your passenger's side seat. You can gain access to it by simply sliding the seat all the way forward and removing the plastic cover from the ECU. You can also remove the seat if you want, it makes access a little easier.

The VG30i ECU's have a tiny toggle switch on the side of the ECU with a small snap-in switch cover that must be utilized to select the diagnostic mode of the ECU. The 4-cylinder ECU and the VG30E ECU has a slotted switch that turns 1/4 or 1/2 turn clockwise and counterclockwise to do the same task. Some early 4-cyl HB ECU's have the switch as well. In any case it will have one or the other.

For 4-cylinder:
1. Turn the ignition switch on, but do not start the engine. All of the lights in the dash should be on.
2. Turn the 'diagnostic mode selector' screw on the ECU fully clockwise. The check engine light will go out. Wait 5 seconds, then turn the screw fully counter clockwise.
3. The check engine light will then begin to flash the trouble code. (number of long flashes is the 1st digit, number of short flashes is the 2nd digit)
4. To clear all stored codes and turn the check engine light off, turn the screw fully clockwise while it is in diagnostic mode. Wait 5 seconds, then turn the screw fully counter clockwise.
5. To keep the codes stored, simply turn the key off as the check engine
light is flashing and the ECU will keep all stored codes and the check engine light will remain on.

For V6:
1. Turn the ignition switch on, but do not start the engine. All of the lights in the dash should be on.
2. For VG30i: There is a little plastic tab you pull off of the side of the ECU(facing the door). A small toggle switch is behind it with 2 positions, "ON" and "DIAGNOSTICS". Using a small screwdriver or tool, move it to the diagnostics position. The red and green LED's on top of the ECU will blink simultaneously. One time, pause, then 2 times, three times, pause...so on for each mode, 1 through 5. Mode 3 is the most commonly used mode and will yield the ECU trouble codes you need to figure out what's going on with your engine.
For VG30E with slotted switch: Turn the 'diagnostic mode selector' screw on the ECU fully clockwise. The check engine light will go out. Wait 5 seconds, then turn the screw fully counter clockwise.
3. After it blinks both LED's 3 times move the toggle switch back to the on position. After about five seconds it will start to output out the diagnostic codes as with the 4-cylinder ECU. Note each code as it is displayed, the red LED flashing once for 10's, and the green LED flashing once for 1's. Meaning: One red flash and two green flashes means code 12.
4. To clear the ECU of any trouble codes, move the switch to the "DIAGNOSTICS" position then back to the "ON" position and turn off the key.

1986.5-1995 Nissan ECU Flash Codes(all engines)

11 Crank Angle Sensor/Camshaft Position Sensor.
12 Air Flow Meter/Mass Air Flow Sensor.
13 Engine Coolant Temperature Sensor.
14 Vehicle Speed Sensor.
21 Ignition Signal.
22 Fuel Pump.
23 Idle Switch.
24 Throttle Valve Switch.
25 Idle Speed Control Valve.
28 Cooling Fan Circuit.
31 ECM.
32 EGR Function.
33 Heated Oxygen Sensor.
34 Knock Sensor.
35 Exhaust Gas Temperature Sensor.
36 EGR Control-Back Pressure Transducer.
37 Knock Sensor.
38 Right hand bank Closed Loop (B2).
41 Intake Air Temperature Sensor.
42 Fuel Temperature Sensor.
43 Throttle Position Sensor.
44 ECCS Normal Operation.
45 Injector Leak.
47 Crankshaft Position Sensor.
51 Injector Circuit.
53 Oxygen Sensor.
54 A/T Control.
55 No Malfunction.
63 No. 6 Cylinder Misfire.
64 No. 5 Cylinder Misfire.
65 No. 4 Cylinder Misfire.
66 No. 3 Cylinder Misfire.
67 No. 2 Cylinder Misfire.
68 No. 1 Cylinder Misfire.
71 Random Misfire.
72 TWC Function right hand bank.
73 TWC Function right hand bank.
76 Fuel Injection System Function right hand bank.
77 Rear Heated Oxygen Sensor Circuit.
82 Crankshaft Position Sensor.
84 A/T Diagnosis Communication Line.
85 VTC Solenoid Valve Circuit.
86 Fuel Injection System Function right hand bank.
87 Canister Control Solenoid Valve Circuit.
91 Front Heated Oxygen Sensor Heater Circuit right hand bank.
94 TCC Solenoid Valve.
95 Crankshaft Position Sensor.
98 Engine Coolant Temperature Sensor.
101 Front Heated Oxygen Sensor Heater Circuit right hand bank.
103 Park/Neutral Position Switch Circuit.
105 EGR and EGR Canister Control Solenoid Valve Circuit.
108 Canister Purge Control Valve Circuit

ECU Diagnostic Mode Procedures
Mode I - Exhaust Oxygen Sensor Monitor
-----------------------------------------------------------------------
Use Mode I to determine if the Oxygen Sensor is functioning properly.

Warm the engine to normal temperature.
Run the engine above 2000 RPM under no load while looking at the ECU.
Make sure the GREEN LED goes on and off more than five times during ten seconds at 2000 RPM.
If the number of flashes are not more than five, replace the oxygen sensor. If the LED does not flash, check the sensor's circuit.


Mode II - Mixture Ratio Control Monitor
-----------------------------------------------------------------------
Use Mode II to determine if the air/fuel mixture is cycling correctly.

Warm the engine to normal operating temperature.
Turn the dial on the ECU fully clockwise (or if you have a switch, turn it on).
After the LED flashes twice, turn the dial fully counter clockwise (or turn the switch off).
Run the engine above 2000 RPM under no load while looking at the ECU.
If the RED LED blinks simultaneously with the GREEN LED, the air/fuel mixture is cycling properly.
If the RED LED stays off, the mixture is more than 5% rich.
If the RED LED stays on, the mixture is more than 5% lean.
If the RED LED stays on or off above 2000 RPM, complete the diagnostics before beginning repairs.


Mode III - Stored Fault Code Reporting
-----------------------------------------------------------------------
Use Mode III to retrieve all stored trouble codes in memory.
Use the above posted procedures.


Mode IV - Switch Operation Monitor
-----------------------------------------------------------------------
Use Mode IV to determine if the Throttle Position Sensor (TPS), Starter circuit and/or Vehicle Speed Sensor (VSS) are in proper working order.

Turn the ignition switch on, but do not start the engine.
Turn the dial on the ECU fully clockwise. After the LED flashes 4 times, turn the dial fully counter clockwise.
Make sure the RED LED is turned off.
Make sure the RED LED turns on when depressing the gas pedal. If not, check or replace the Throttle Position Sensor.
Make sure the RED LED turns on when turning the ignition key the START position. If not, check or replace the starter.
Drive the vehicle with the ECU unbolted and within view. Make sure the GREEN LED turns on when speed is 12 MPH or more. If not, check or replace the Vehicle Speed Sensor.


Mode V - Real Time Diagnostic Function
-----------------------------------------------------------------------

Use Mode V to determine if the Crankshaft Position Sensor (CPS), Mass Air Flow Sensor (MAFS) and/or Ignition signal are working properly.

Start engine.
Turn the dial on the ECU fully clockwise.
After the LED flashes 5 times, turn the dial fully counter clockwise.
Make sure LEDs do not flash for 5 minutes when racing or idling the engine.
If it flashes, count the number of flashes, turn engine off, and see the following 3 paragraphs. Perform real-time diagnosis inspection and repair or replace malfunctioning part if present.
if LEDs do not flash for 5 minutes, turn engine off.

If the RED LED flashes 3 times for 1.5 seconds, check the Crankshaft Position Sensor. Check the harness continuity at CPS when the engine is stopped. Inspect the harness for dust and clean if necessary. Check the pin terminal at ECU for bends and remove them as necessary. Reconnect harness and recheck continuity. During real-time diagnosis, tap the harness connector or component and check if trouble code is displayed. If so, replace terminal.

If the GREEN LED flashes twice-3 times for 0.5 seconds, check Mass Air Flow Sensor. Check the harness continuity at MAFS when the engine is stopped. Inspect the harness for dust and clean if necessary. Check the pin terminal at ECU for bends and remove them as necessary. Reconnect harness and recheck continuity. During real-time diagnosis, tap the harness connector or component and check if trouble code is displayed. If so, replace terminal.

If the GREEN LED flashes 4 times for 0.2 seconds 3 times, check the ignition signal. Check the harness continuity when the engine is stopped. Inspect the harness for dust and clean if necessary. Check the pin terminal at ECU for bends and remove them as necessary. Reconnect harness and recheck continuity. During real-time diagnosis, tap the harness connector or component and check if trouble code is displayed. If so, replace terminal.

Hope this helps...
__________________
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Hi, I have a 2001 Mazda Millenia S. The light for my heated seats come on, but there is no heat in either the driver's or passenger's seat. What could be the problem?

Mazdas are pretyy bad about the seat heating elements burning out. To verify that the problem is not the circuits to the elements, remove the 4 bolts holding the seat to the floor and tilt the seat back. Find the 2 pn connector for the heating element under the seat. (On the driver's side it will have a White and Red wire and a Yellow and Red wire. On the passenger side it will have a White and Red wire and a Green wire) Disconnect the connector. Using a standard 12 volt test light and a paper clip, use the paper clip to connect on end of the test light to the White and Red wire and probe the Yellow and Red (or the Green wire) with the test light probing end. With the ignition switch on and the seat switches turned on, the test lamp should light up. If it does, you need to replace the heating element in the seat. If it does not light up, post a comment to let me know, and I'll talk you through diagnosing the heater circuits.
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Hope this helps. It's for a 2004 eclipse remote start.

12volts white/red (40A) + ignition harness
Starter black/red + ignition harness
Second Starter N/A
Ignition green + ignition harness
Second Ignition N/A
Third Ignition N/A
Accessory blue/red + ignition harness
Second Accessory blue/black + ignition harness
Keysense blue/red ignition harness
Notes: This wire rests at ground, and goes to an open circuit when the key is inserted into the ignition cylinder.
Power Lock purple - pin 33 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Power Unlock lt. green/red - pin 34 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Lock Motor lt. green 5wi pin 19, 28 pin plug below fuses
Unlock Motor green/red 5wi pin 22 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Parking Lights+ green/white + pin 2, 15 pin plug above fuses
Parking Lights- N/A
Hazards green - pin 55 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Turn Signal(L) green/blue + pin 8, 15 pin plug above fuses
Turn Signal(R) green/yellow + pin 13, 15 pin plug above fuses
Reverse Light red/blue + pin 9, 43 pin plug in driver kick
Door Trigger see notes - see notes
Notes: The driver door trigger is lt. green, pin 6, in a 15 pin plug above the fuses. The passenger door is lt. green/black in pin 65 at the ETACS ECU. Use both wires and diode isolate each.

The ETACS ECU is attached to the back of the fuse box.
Dome Supervision green/orange - pin 1, 3 pin plug above fuses
Trunk/Hatch Pin red - pin 62 or 37 at ETACS ECU
Notes: It is in pin 62 on the coupes, and in pin 37 on the convertible spyders.

The ETACS ECU is attached to the back of the fuse box.
Hood Pin green/red - pin 24 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Trunk/Hatch Release green/white 5wi pin 32 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Power Sliding Door N/A
Factory Alarm Arm lt. green/black - pin 42 at ETACS ECU
Notes: Meter this wire while turning the key in the driver door key cylinder.

The ETACS ECU is attached to the back of the fuse box.
Factory Alarm Disarm orange - pin 25 at ETACS ECU
Notes: Meter this wire while turning the key in the driver door key cylinder.

The ETACS ECU is attached to the back of the fuse box.
Disarm No Unlock blue/red - pin 27 at ETACS ECU
Notes: Meter this wire while turning the key in the hatch/trunk key cylinder.

The ETACS ECU is attached to the back of the fuse box.
Tachometer white or black/white ac engine speed detection connector
Notes: The engine speed detection connector is a single pin connector in the fuse/relay box under the hood.

Can also go to one of the ignition coils or the distributor assembly and use the black/blue or white/green wire.
Wait to start N/A
Brake Wire green/orange + brake pedal switch
Parking Brake yellow/green - parking brake switch
Horn Trigger lt. green/black - pin 44 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Memory Seat 1 N/A
Memory Seat 2 N/A
Memory Seat 3 N/A
Interface Module: Category:
Immobilizer Bypass Required:
Yes Type:
Transponder
Part #: 556UW
Alternate Part1 #: DesignTech 20402
Alternate Part2 #: DesignTech 29402
Notes: Standard on all models.

Good luck.
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1994 Nissan Pathfinder LE Engine turns but no start.

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Air bag light comes on and stays on. Never any accidents.

Had the same problem, found the wire disconnected under the driver seat (there is a yellow plug and with one red wire, which is fine, and one green wire, which is broken. Fixed the wire, light went off.
Email me if you need details [email protected]
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