Nissan UD Diesel: Diagnostic Trouble Code Interpretation

MID-TICS System

The diagnostic trouble codes will be displayed by the Check Engine lamp. For example, a code 12 will be displayed by the Check Engine lamp flashing 1 time for approximately 1.2 seconds, followed by a .6 second pause, then 2 short flashes. Each trouble code will be displayed 3 times before the next trouble code is displayed.

Nissan UD Diesel: Accessing Diagnostic Trouble Codes

ID-TICS System

  1. Place diagnostic switch in the Off position.

  2. Carry out diagnosis under the following three conditions:

    1. Turn ignition On.

    2. Crank engine.

    3. Start and operate engine.

  3. The trouble codes will be displayed by the flashing Engine Control Lamp and the Overheat Warning Lamp and the Overheat Warning Buzzer.

Nissan UD Diesel: Clearing Diagnostic Trouble Codes

MID-TICS System

  1. Release diagnostic switch.

  2. Turn ignition On.

  3. Check that Overheat Warning Lamp is displaying Diagnostic Display Code.

  4. Connect memory clear connector 2400400Z09, or a suitable jumper wire to reset switch terminals. The reset switch is located behind the electrical unit board.

  5. Check that Overheat Warning Lamp and Buzzer display shows Diagnostic Display Code 0-1. The System memory will be cleared in approximately 10 seconds.

  6. Remove connector or jumper wire from reset switch electrical connector.

  7. Connect electrical connector to reset switch.

  8. Turn ignition Off.

  9. Turn ignition On, then observe Overheat Warning Lamp and Buzzer. Diagnostic Display Code 0-1 should be indicated.

 

The codes list.

  • 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 ECU
  • 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
  • 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 Misfire71 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

Nissan UD DieselID-TICS SystemPlace diagnostic switch in the Off position.Carry out diagnosis under the following three conditions:Place ignition switch in the On position.Crank engine.Start and operate engine.The trouble codes will be displayed by the flashing Engine Control Lamp and the Overheat Warning Lamp and the Overheat Warning Buzzer.

Trouble Code InterpretationMID-TICS SystemThe diagnostic trouble codes will be displayed by the check engine lamp. For example, a code 12 will be displayed by the check engine lamp flashing 1 time for approximately 1.2 seconds, followed by a .6 second pause, then 2 short flashes. Each trouble code will be displayed 3 times before the next trouble code is displayed.

Clearing Trouble Codes Turn the ignition key on.Turn the diagnostic mode selector on the ECU fully clockwise and wait more than two seconds then turn the selector fully counterclockwise. The ECCS system is now in mode 2.Turn the diagnostic mode selector on the ECU fully clockwise and wait more than two seconds then turn the selector fully counterclockwise. The ECCS system is now in mode 1. ECU memory is now erased.MID-TICS SystemRelease diagnostic switch.Place ignition switch in On position.Check that Overheat Warning Lamp is displaying Diagnostic Display Code.Connect memory clear connector(###) ###-####09, or a suitable jumper wire to reset switch terminals. The reset switch is located behind the electrical unit board.Check that Overheat Warning Lamp and Buzzer display shows Diagnostic Display Code 0–1. The System memory will be cleared in approximately 10 seconds.Remove connector or jumper wire from reset switch electrical connector.Connect electrical connector to reset switch.Place ignition switch in Off position.Place ignition switch in On position, then check Overheat Warning Lamp and Buzzer. Diagnostic Display Code 0–1 should be indicated.

CLEARING DIAGNOSTIC MEMORYTo clear the diagnostic memory, short circuit the memory resetswitch at the behind the electrical unit board.<Procedure for Clearing>1.Release the diagnostic switch.2.Turn the ignition key switch ON.3.Check that the Overheat warning light is displaying theDiagnosis Display Code.4.Connect the harness or memory clear connector (2400400Z09) to the memory reset switch terminal, and short cir-cuit the switch.NOTE When connecting the harness, the battery voltage isapplied to the Y/R cord side, so be careful not to shortcircuit any other part.5.Check that the Overheat warning light and buzzer displayshows the normal Diagnosis Display Code (0-1). The mem-ory will be erased in about ten seconds.6.Remove the special connector or harness from the memoryreset switch terminal.7.Connect the diagnostic switch.8.Turn the ignition key switch OFF, then turn the ignition keyswitch ON again and check that the Overheat warningbuzzer shows code <0-1>.NOTE If the ignition key switch is turned ON with the sensor ter-minals still disconnected, a trouble signal will berecorded in the memory

I did find out how to pull codes . it was the single wire pigtail labled (E). turn the key on and ground the wire. it is a code for the dpf. code 91. it apparently cant be troubleshot without a consult scanner. I sent this one down the road. I know you guys tried. but all I got is wrong info. I wasted a lot of time on this one. maybe this post will help somebody else. sorry and thanks