Nissan Patrol Fault Codes

On the 61st Patrol, you can read and reset errors from various systems using the built-in self-diagnosis system. Without the use of special equipment (scanners), it is possible to read and reset errors in the engine, SRS system, automatic transmission, and on pre-Restyle models, the ABS system, so in most cases there is no need to take the Patrol to the service center and pay your uncle money for diagnostics. Let's consider each system separately.

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ECU Fault Codes and Pinouts. 

The information below is valid for Patrol with ZD30 engine.

An indicator of an engine error is the "CHECK ENGINE" lamp on the instrument panel (also known as "CHECK", "engine icon", "throw out engine"), which does not go out after starting the engine.

This lamp also functions as a warning lamp for the NATS (immobilizer). If the lamp flashes when you turn on the ignition, this indicates a NATS malfunction.

To read error codes you need to do the following:

• Turn on the ignition (lock in position "ON", do not start the engine)
• Make sure that the CHECK lamp is lit. The system will be in the first diagnostic mode (checking the dashboard lamps).
• Connect pins 1 and 8 of the diagnostic connector with a jumper (clip, wire) and make sure that the “CHECK” lamp goes off, then wait at least two seconds.

Install/remove the diagnostic connector jumper carefully. It must not be allowed to come into contact with metal structures, because this may cause a short circuit.

If you still manage to short-circuit and the instrument panel goes out, then look at the 28th fuse in the passenger compartment.

• Remove the jumper. The system will enter the second diagnostic mode (self-diagnosis), the "CHECK" lamp will begin to flash.
• Read error codes by counting the flashes of the "CHECK" lamp.
• The codes are shown as sets of two seconds apart. Each set consists of a series of flashes lasting 0.6 seconds (long), followed by a pause of approximately 1 second, followed by a series of flashes lasting 0.3 seconds (short). The first series represents the first two digits of the code, and the second the last two digits. The sets go in a circle, so if it was not possible to read the error code the first time, then this can be done later, when it comes to it again.
• For example, code 0102 (MAF) will be shown as one long flash, followed by a second pause and two short flashes. If there are a lot of errors, then a good practice would be to record the blinking of the lamp on your phone, so that later you can safely count them and save the recording just in case.

To clear errors, during self-diagnosis (flashing of the lamp and reading codes), you must again jumper pins 1 and 8 of the diagnostic connector for at least two seconds, and then remove the jumper. The "CHECK" lamp "blinks" 5-5, which means code 0505 - no errors!

To exit the self-diagnosis mode and leave errors in memory, simply turn off the ignition.

There are times when the “CHECK” light does not light up at all, or lights up all the time along with the glow plug light. This talks about problems with the ECM (engine computer).

So, if the glow plug lamp is constantly on and the car does not start and at the same time you can hear some kind of buzzing in the injection pump and the relay is activated, then the problem is poor-quality soldering of the microcircuit memory after the chip tuning procedures, or poor-quality contact in the panels under the microcircuits, if any . were applied.

A constantly burning spark plug light can also indicate a malfunction of the ECU relay.

If the “CHECK” lamps and glow plugs do not light up at all and the car does not start, then the problem is in the power supply relay to the ECM unit, or its circuits and fuses.

In parentheses after the code are the abbreviated names of errors when diagnosing with a scanner

Errors that do not cause the “CHECK” lamp to light up (are hidden) are marked with an asterisk.

0102 (MASS AIR FLOW SEN, p. 117) - incorrect voltage from the mass air flow sensor (MAF)

Reason: malfunction of the mass air flow sensor or its wiring (break, short circuit).

0103 * (COOLANT TEMP SEN, p. 123) - incorrect voltage from the coolant temperature sensor (on the cylinder head).

Reason: malfunction of the sensor or its wiring (break, short circuit).

0104 (VEHICLE SPEED SEN, p. 127) - there is no signal from the speed sensor while driving.

Reason: malfunction of the sensor or its wiring (break, short circuit).

0203 (CCEL POS SW (F/C), p.131) - no signal from the Accelerator switch.

Reason: malfunction of the switch or its wiring (break, short circuit).

0208 (OVER HEAT, p. 136) - excessive engine overheating.

Possible reasons:

• coolant temperature sensor (see 0103)
• engine cooling system
• air conditioner fan and cooling system

0403 (ACCEL POS SENSOR, p. 156) - the accelerator pedal position does not correspond to the state of the accelerator pedal position switch or sensor.

Reason: malfunction of the accelerator pedal sensor or switch or their wiring (break, short circuit).

0406 * (INT/AIR VOLUME, p. 169) - increased voltage at the MAF output during engine operation, the MAF detects an abnormally high air supply.

Possible reasons:

• leakage of the intake pipe
• leakage of the cooler
• malfunction of the TKR (turbine) or its control system
• Malfunction of the mass air flow sensor or its wiring

0407 (CRANK POS SEN (TDC), p. 171) - incorrect signal from the TDC sensor (crankshaft position sensor).

Possible reasons:

• malfunction of the sensor or its wiring
• pulsations and interference in the on-board network
• faulty starter causing interference in the on-board network

0502 * (BATTERY VOLTAGE, p. 177) - increased battery voltage.

Possible reasons:

• unsuccessful "lighting"
• Battery malfunction (overcharging)
• generator malfunction
• ECM malfunction

0504 * (A/T COMM LINE, p. 179) - incorrect signal from the TCM unit (automatic transmission control unit).

Reason: malfunction of the TCM unit (for example, flooded with water) or its wiring.

0905 (TURBO PRESSURE, p. 233) - incorrect voltage from the turbocharger pressure sensor.

Possible reasons:

• boost pressure exceeded
• malfunction of the sensor or its wiring
• Intercooler leak

1003 (EGR VOLUME CONT/V, page 238) - EGR valve

Reason: malfunction of the valve or its wiring (break, short circuit, damaged by oil from the intercooler).

1401 - 1408 * (NATS MALFUNCTION) - NATS system malfunction

Injection pump error codes:

0402 (P9.FUEL TEMP SEN, p. 151) - fuel temperature sensor.

Reason: Malfunction of the fuel temperature sensor located in the fuel injection pump or its signal circuit (open circuit, short circuit).

0701 (P1.CAM POS SEN, p.185) - cam position sensor.

Possible reasons:

malfunction of the fuel injection pump rotation sensor or its wiring (loop)

battery discharge

0702 (P2.TDC PULSE SIG, p. 191) - the synchronization of the fuel injection pump rotation sensor and the TDC (crankshaft) sensor is broken, the fuel injection pump does not recognize the TDC sensor signal.

Possible reasons:

malfunction of the TDC sensor (near the crankshaft joint) or its wiring

mechanical damage to one of the crown vertices on the crankshaft pulley (jam)

the intermediate “cunning” gear has come loose or is damaged

malfunction of the fuel injection pump or its wiring

Malfunction of the ECM and fuel injection pump communication circuit

there may be a malfunction of the ECU coolant temperature sensor or its wiring

0703 (P3.PUMP COMM LINE, p. 197) - incorrect signal from the ECM.

Possible reasons:

faulty fuel injection pump wiring (damaged by oil from the intercooler)

malfunction of the fuel injection pump control unit

ECM relay malfunction

battery discharge

0704 (P4.SPILL/V CIRC, p.203),

0706 (P6.SPILL VALVE) - malfunction of the control circuit of the injection timing control valve (drain valve) (0704) or malfunction (abnormal functioning) of the drain valve itself (0706).

Possible reasons:

fuel injection pump malfunction

battery discharge

failure of the transistor key of the injection timing control valve (0706)

0705 (P5.PUMP C/MODULE, p. 209) - as a result of self-diagnosis, incorrect operation of the injection pump control unit was detected.

Cause: faulty fuel injection pump control unit or low battery.

0707 (P7.F/INJ TIMG FB, p. 212) - incorrect operation of the synchronization (feedback) system for controlling the timing of fuel injection.

In most cases, the error is associated with low-quality fuel, as well as leaks and poor flow of the fuel line. Characteristic signs are a loss of traction, a decrease in speed and the constant appearance of the 77th error when trying to gain speed or increase the load.

Possible reasons (by probability of occurrence):

• low-quality or frozen fuel (drain, refill with known quality fuel)
• clogged fuel filter (dirt, paraffin, replace filter)
• air leakage (check and eliminate air leakage)
• poor pumpability of the fuel line (clogged, faulty valve in the fuel tank cap, try driving without the tank cap, blow out the fuel line)
• the filter ("mesh") of the injection pump control valve is clogged
• The throttle of the fuel injection advance automatic transmission is clogged
• wear (low performance) or malfunction of the booster pump (HP pump) high pressure fuel pump
• faulty injection pump membrane (the engine starts poorly or does not start at all)
• other malfunction of the fuel injection pump or its wiring
• TDC sensor malfunction (see 0407)
• battery discharge

1004 (FUEL CUT SYSTEM1, p. 247) - fuel supply cutoff system.

Possible reasons:

• malfunction of the fuel injection pump or its wiring
• battery discharge

0301 (ECM 2, p. 148) - incorrect operation of the ECM unit.

Possible reasons:

• fault in the ECM
• on-board network voltage ripple
• faulty starter causing interference in the on-board network
• generator malfunction
• ECM relay malfunction (0902)
• battery discharge

0802 (ECM 10, p. 218) - incorrect voltage from the absolute atmospheric pressure sensor in the ECM/

Cause: ECM fault.

0804 * (ECM 11, p. 220) - problems in processing input signals.

Cause: ECM fault.

0807 (ECM 14, p. 222) - incorrect voltage from the brake light switch (limit switch) on the brake pedal.

Possible reasons:

• malfunction of the switch or its wiring (break, short circuit)
• ECM malfunction

0901 (ECM 12) - ECM unit ROM malfunction.

Reason: see 0301.

0902 (ECM RLY, p. 227) - ECM relay malfunction.

Possible reasons:

• Faulty ECM relay or wiring
• battery discharge

0903 * (ECM 15, p. 231) - disturbances in the processing of input signals due to a short circuit in the ECM relay circuit or the ignition switch IGN signal.

Possible reasons:

• faulty wiring (short circuit) of the ECM relay or ignition switch IGN signal
• ECM relay malfunction
• ignition switch fault
• battery discharge

Errors associated with electronic sensors and devices (including fuel injection pump) do not always mean a malfunction of the corresponding components, because may appear as a result of an attempt to start the engine with a severely discharged battery or when the starter malfunctions, which causes a severe power loss. In such a situation, you need to replace or charge the battery, check for power loss during startup, reset the errors and make sure they do not appear again.

The SRS (airbag) system error indicator is the "SRS" (also known as "airbag") lamp, which is constantly on or flashing.

To read SRS errors, do the following:

1. Make sure the battery is charged.
2. Turn on the ignition (lock in position "ON", do not start the engine)
3. System in user mode. Observe the "SRS" lamp:

Switch from user mode to diagnostic mode:

Option 1:

Turn off the ignition, then turn it on again and within 7 seconds press the driver's door switch five times. If there are errors, the system will enter diagnostic mode and the "SRS" lamp will begin to flash, indicating a fault code.

Option 2:

Turn off the ignition and turn it on again.

After the “SRS” lamp burns out for the required 7 seconds and goes out, immediately turn off the ignition and wait five seconds. Repeat steps 1 and 2 two more times.

Turn on the ignition. If there are errors, the system will go into diagnostic mode and after 7 seconds the “SRS” lamp will start flashing, indicating a malfunction code.

SRS fault codes:

Front airbags and diagnostic unit:

0 (no code, only the 3-second start signal is repeated) - there is an error that was not previously erased after the fault was eliminated or a “floating” fault occurred

1 - malfunction of the passenger seat belt pretensioner circuit

2 - malfunction of the driver's airbag circuit, incl. steering column cable

3 - driver seat belt pretensioner circuit malfunction

7 - faulty diagnostic unit

8 - passenger airbag circuit malfunction

Side cushions:

1 - right airbag circuit malfunction

2 - malfunction of the left airbag circuit

3 - malfunction of the right shock sensor (satellite sensor)

4 - malfunction of the left shock sensor (satellite sensor)

To read errors you need to do the following:

Make sure the rear lock is disabled.

Drive at a speed of more than 30 km/h for at least one minute and stop.

Turn off the ignition and connect the 9th pin of the ODB-II diagnostic connector (4th pin of the Consalt-1 connector) to ground with a suitable wire.

Turn on the ignition (do not press the brake pedal!). After three seconds, the ABS lamp will begin to flash, indicating a fault code.

The fault code is determined by counting the number of flashes of the ABS lamp. The codes are shown as sets, with an interval of three seconds. Each set consists of a series of flashes lasting 0.6 seconds (long), followed by a pause of approximately 1 second, followed by a series of flashes lasting 0.3 seconds (short). The first series corresponds to the first digit of the code, and the second - to the second. The sets go in a circle for 5 minutes, so if the first time it was not possible to read the fault code, then this can be done later, when it comes to it again. Up to three fault codes can be stored in memory, the last one will be displayed first. The code sequence always starts with start code 12 (one long flash, two short flashes), followed by fault codes. If there are no faults, then only the start code will work.

To exit the self-diagnosis mode, disconnect the self-diagnosis contact from ground.

After troubleshooting, you need to clear the error:

We carry out steps 1, 3 and 4 to enter the diagnostic mode.

Disconnect the self-diagnosis contact from ground. The ABS light will remain on continuously.

Within 12 seconds, we connect the self-diagnosis contact to ground three times for a period of more than one second. The "ABS" lamp will go out after the error is cleared.

ABS fault codes:

Actuator codes:

45 - front left output solenoid valve

46 - front left inlet solenoid valve

41 - front right output solenoid valve

42 - front right inlet solenoid valve

55 - rear output solenoid valve

56 - rear inlet solenoid valve

Sensor codes:

25 * - Front left (break)

26 * - Front left (short circuit)

21 * - Front right (break)

22 * - Front right (short circuit)

31 * - Rear right (break)

32 * - Rear right (short circuit)

35 * - Rear left (break)

36 * - Rear left (short circuit)

Other codes:

18 * - sensor rotor

17* - G-sensor and circuits

61 ** - actuator motor or motor relay

63 - solenoid valve relay

57 *** - power supply (low voltage)

71 - control unit

* If one or more wheels rotate on rough or slippery roads for 40 seconds or more, the ABS warning light will come on. This is not a malfunction. Only in the event of a short circuit (codes No. 26, 22, 32 and 36), after repair, the "ABS" lamp also lights up when the ignition key is turned "ON". In this case, drive at a speed exceeding 30 km/h for approximately 1 minute and make sure that the ABS warning light goes off while the vehicle is in motion.

** Code 61 may occur when the ABS unit is not properly grounded.

*** Code 57 does not indicate a malfunction of the ABS control unit, it only indicates the fact of a power supply voltage drop.

The automatic transmission goes into emergency mode in the event of a serious malfunction of the electronic system. In emergency mode, the automatic transmission always operates in 3rd gear, regardless of the selector position “1”, “2” or “D”. The "POWER", "HOLD", "O/D OFF" switches do not perform their functions. When the ignition is turned on, the automatic transmission diagnostic indicator lamp flashes for 8 seconds.

Emergency mode can also be activated if the car was moving in extreme conditions (for example, slipping and immediately following it with emergency braking). In this case, to return the automatic transmission to normal mode, you need to turn off the ignition, wait 5 seconds and turn it on again. The warning light will flash only once for 8 seconds, after which the automatic transmission will return to normal mode. If the automatic transmission does not go into normal mode, then it is necessary to carry out diagnostics and count errors for further repair.

Automatic transmission diagnostics

Depending on the region and equipment, diagnostic algorithms may differ, and the functions of the warning lamp are performed by different indicators:

• Configurations with automatic transmission mode switch (POWER/HOLD) - "POWER" indicator on the automatic transmission mode switch
• Configurations without automatic transmission mode switch - "O/D OFF" indicator on the dashboard
• Australia (first releases) - "POWER" indicator on the automatic transmission mode switch
• Middle East (first releases, no "Overdrive" switch) - "A/T CHECK" indicator on the dashboard

Before starting diagnostics, you need to warm up the engine to normal operating temperature.

Further, in the text, by turning off the ignition we mean turning the key to the “OFF” position, and by turning on the ignition we mean turning the key to the “ON” position (without starting the engine).

Configurations with automatic transmission mode switch

Turn off the ignition, wait 5 seconds, then move the “A/T” switch to the “AUTO” position.

We turn the “Overdrive” switch to the ON position (must be recessed), move the selector to the “P” position, and then turn on the ignition. The "POWER" indicator will remain lit for two seconds.

We turn the key to the "ACC" (Accessories) position, and then move the selector to the "D" position.

Turn the "Overdrive" switch to the OFF position (must be released), depress the accelerator pedal fully and release it, then turn on the ignition.

Move the selector to position “2”, after which we move the “Overdrive” switch to the ON position.

Move the selector to position “1”, then turn the “Overdrive” switch to the OFF position.

Depress the accelerator pedal fully and release it.

We read the error code by flashing the "POWER" indicator.

Configurations without automatic transmission mode switch

Turn off the ignition, wait 5 seconds and turn the key to the "ACC" (Accessories) position.

We turn the “Overdrive” switch to the ON position (must be recessed), move the selector to the “P” position, and then turn on the ignition. The "OD OFF" indicator light will remain on for two seconds.

Turn off the ignition and turn it on again.

Move the selector to position "D" and turn off the ignition.

We turn the "Overdrive" switch to the OFF position (must be released), then turn on the ignition and wait more than two seconds.

Move the selector to position “2”, after which we move the “Overdrive” switch to the ON position.

Move the selector to position “1”, then move the “Overdrive” switch to the OFF position.

Fully depress the accelerator pedal and release it.

We read the error code by blinking the indicator lamp "OD OFF".

Middle East ("Overdrive" switch missing)

Turn off the ignition, move the selector to position “P”, then turn on the ignition again. The "A/T CHECK" indicator will remain on for 2 seconds.

Turn off the ignition and move the selector to position “D”.

Press the "A/T" switch and hold it, then turn on the ignition.

Move the selector to position “2” and release the “A/T” switch.

Move the selector to position “1”, press and release the “A/T” switch.

Fully depress the accelerator pedal and release it.

We read the malfunction code by flashing the “A/T CHECK” indicator.

Automatic transmission error codes

1 ([url=VEHICLE SPEED SENSOR A/T (REVOLUTION

SENSOR), p.67) - short circuit or open circuit of the speed sensor.

2 (VEHICLE SPEED SENSOR MTR, p. 69) - short circuit or open circuit of the speed sensor.

3 (THROTTLE (ACCELERATOR) POSITION

SENSOR, p.71) - short circuit or open circuit of the throttle position sensor.

4 (SHIFT SOLENOID VALVE A, p. 74) - short circuit or open circuit of the gear shift solenoid valve “A”.

5 (SHIFT SOLENOID VALVE B, p. 76) - short circuit or open circuit of the gear shift solenoid valve “B”.

6 (OVERRUN CLUTCH SOLENOID VALVE, p. 78) - short circuit or open circuit of the overrunning clutch solenoid valve.

7 (TORQUE CONVERTER CLUTCH SOLENOID

VALVE, p.80) - short circuit or open circuit of the torque converter clutch solenoid valve.

8 (A/T FLUID TEMPERATURE SENSOR AND TCM

POWER SOURCE, p.83) - open circuit of the fluid temperature sensor or damage to the power circuit of the automatic transmission control unit.

9 (ENGINE SPEED SIGNAL, p. 86) - short circuit or open circuit of the engine speed signal.

10 (LINE PRESSURE SOLENOID VALVE, p. 88) - short circuit or open circuit of the pressure solenoid valve in the line.