Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC)
Power supply and ground circuit

Diagnosis Procedure

1.CHECK GROUND CONNECTION

  1. Turn ignition switch OFF.
  2. Check ground connection E. Refer to Ground Inspection in GI, "Circuit Inspection".

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT

  1. Disconnect ECM harness connectors.
  2. Check the continuity between ECM harness connector and ground.
ECM Ground Continuity
Connector Terminal
F10 10 Ground Existed
11
E16 108

    3.   Also check harness for short to power.

Is the inspection result normal?

YES >> GO TO 4.

NO >> GO TO 3.

3.DETECT MALFUNCTIONING PART

Check the following.

  • Harness connectors E55, F55
  • Harness for open or short between ECM and ground

>> Repair open circuit or short to power in harness or connectors.

4.CHECK ECM POWER SUPPLY CIRCUITI

  1. Reconnect ECM harness connectors.
  2. Turn ignition switch ON.
  3. Check the voltage between ECM harness connector and ground.
ECM Ground Voltage
Connector Terminal
F16 93 Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 6.

NO >> GO TO 5.

5.DETECT MALFUNCTIONING PART

Check the following.

  • 10 A fuse (No. 55)
  • Harness for open or short between ECM and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.CHECK ECM POWER SUPPLY CIRCUITII

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON and then OFF.
ECM Ground Voltage
Connector Terminal
F16 106 Ground After turning ignition switch OFF, battery voltage will exist for a few seconds, then drop to approximately 0 V.

Is the inspection result normal?

YES >> GO TO 7.

NO >> GO TO 9.

7.CHECK ECM POWER SUPPLY CIRCUITIII

  1. Turn ignition switch ON.
  2. Check the voltage between IPDM E/R harness connector and ground.
IPDM E/R Ground Voltage
Connector Terminal
F43 50 Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 8.

NO >> Replace IPDM E/R. Refer to PCS, "Removal and Installation" (WITH IKEY) or PCS, "Removal and Installation" (WITHOUT IKEY).

8.CHECK INTERMITTENT INCIDENT

Refer to GI, "Intermittent Incident".

>> INSPECTION END

9.CHECK ECM POWER SUPPLY CIRCUITIV

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Check the voltage between ECM harness connector and ground.
ECM Ground Voltage
Connector Terminal
F10 32 Ground Battery voltage

Is the inspection result normal?

YES >> GO TO 13.

NO >> GO TO 10.

10.CHECK ECM POWER SUPPLY CIRCUITV

  1. Disconnect ECM harness connector.
  2. Disconnect IPDM E/R harness connector F.
  3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
ECM IPDM E/R Continuity
Connector Terminal Connector Terminal
F10 32 F43 50 Existed

    4.   Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 12.

NO >> GO TO 11.

11.DETECT MALFUNCTIONING PART

Check the following.

  • Harness for open or short between ECM and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

12.CHECK 20 A FUSE

  1. Disconnect 20 A fuse (No. 53) from IPDM E/R.
  2. Check 20 A fuse.

Is the inspection result normal?

YES >> GO TO 14.

NO >> Replace 20 A fuse.

13.CHECK ECM POWER SUPPLY CIRCUITVI

  1. Disconnect ECM harness connector.
  2. Disconnect IPDM E/R harness connector E44.
  3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
ECM IPDM E/R Continuity
Connector Terminal Connector Terminal
F16 105 F44 11 Existed

    4.   Also check harness for short to ground and short to power.

Is the inspection result normal?

YES >> GO TO 14.

NO >> Repair open circuit or short to ground or short power in harness or connectors.

14.CHECK INTERMITTENT INCIDENT

Refer to GI, "Intermittent Incident".

Is the inspection result normal?

YES >> Replace IPDM E/R. Refer to PCS, "Removal and Installation" (WITH IKEY) or PCS, "Removal and Installation" (WITHOUT IKEY).

NO >> Repair or replace harness or connectors.

    More about «Engine control system (EC)»:

    Precaution

    Engine control system

    Structure and operation

    Engine control system

    Multiport fuel injection system

    Electric ignition system

    Air conditioning cut control

    Cooling fan control

    Evaporative emission system

    Intake valve timing control

    Exhaust valve timing control

    Engine protection control at low engine oil pressure

    Fuel filler cap warning system

    Automatic speed control device (ASCD)

    Automatic speed control device (ASCD)

    Diagnosis description

    Ecm

    Diagnosis and repair workflow

    Additional service when replacing ECM

    Accelerator pedal released position learning

    Throttle valve closed position learning

    Idle air volume learning

    Mixture ratio selflearning value clear

    Basic inspection

    Fuel pressure check

    How to set SRT code

    How to erase permanent DTC

    Trouble diagnosis specification value

    Power supply and ground circuit

    U0101 can comm circuit

    U1001 CAN comm circuit

    P0011 IVT control

    P0014 EVT control

    P0031, P0032 A/F sensor 1 heater

    P0037, P0038 HO2s2 heater

    P0075 IVT control solenoid valve

    P0078 EVT control solenoid valve

    P0101 MAF sensor

    P0102, P0103 MAF sensor

    P0111 IAT sensor

    P0112, P0113 IAT sensor

    P0116 ECT sensor

    P0117, P0118 ECT sensor

    P0122, P0123 TP sensor

    P0125 ECT sensor

    P0127 IAT sensor

    P0128 thermostat function

    P0130 A/F sensor 1

    P0131 A/F sensor 1

    P0132 A/F sensor 1

    P0137 HO2s2

    P0138 HO2s2

    P0139 HO2s2

    P014C, P014D, P015A, P015B, A/F sensor 1

    P0171 fuel injection system function

    P0181 FTT sensor

    P0182, P0183 FTT sensor

    P0196 EOT sensor

    P0197, P0198 EOT sensor

    P0222, P0223 TP sensor

    P0300, P0301, P0302, P0303, P0304 misfire

    P0327, P0328 KS

    P0335 CKP sensor (POC)

    P0340 CMP sensor (PHASE)

    P0420 three way catalyst function

    P0441 EVAP control system

    P0443 EVAP canister purge volume control solenoid valve

    P0444, P0445 EVAP canister purge volume control solenoid valve

    P0447 EVAP canister vent control valve

    P0448 EVAP canister vent control valve

    P0451 EVAP control system pressure sensor

    P0452 EVAP control system pressure sensor

    P0453 EVAP control system pressure sensor

    P0456 EVAP control system

    P0460 fuel level sensor

    P0461 fuel level sensor

    P0462, P0463 fuel level sensor

    P0500 VSS

    P0506 ISC system

    P0507 ISC system

    P050a, P050b, P050e cold start control

    P0520 EOP sensor

    P0524 engine oil pressure

    P0603 ECM power supply

    P0605 ECM

    P0607 ECM

    P0643 sensor power supply

    P0850 PNP switch

    P1078 EVT control position sensor

    P1148 closed loop control

    P117A air fuel ratio

    P1212 TCS communication line

    P1217 engine over temperature

    P1225 TP sensor

    P1226 TP sensor

    P1550 battery current sensor

    P1551, P1552 battery current sensor

    P1553 battery current sensor

    P1554 battery current sensor

    P1564 ASCD steering switch

    P1572 ASCD brake switch

    P1574 ASCD vehicle speed sensor

    P1715 Input speed sensor

    P1720 VSS

    P1805 brake switch

    P2096, P2097 A/F sensor 1

    P2100, P2103 throttle control motor relay

    P2101 electric throttle control function

    P2118 throttle control motor

    P2119 electric throttle control actuator

    P2122, P2123 APP sensor

    P2127, P2128 APP sensor

    P2135 TP sensor

    P2138 APP sensor

    Brake pedal position switch

    Clutch pedal position switch

    Cooling fan

    Electrical load signal

    Fuel injector

    Fuel pump

    Ignition signal

    Malfunction indicator lamp

    On board refueling vapor recovery (ORVR)

    Refrigerant pressure sensor

    Engine control system symptoms

    Normal operating condition

    IDLE SPEED

    Ignition timing

    Evaporative emission system

    EVAP leak check

    Positive crankcase ventilation

    Removal and installation

    Service data and specifications (SDS)

    Nissan Versa Sedan Service Manual / Engine / Engine control system (EC) / Power supply and ground circuit

    Nissan Versa Sedan Service Manual

    Categories


    © 2017-2019 Copyright www.niveguide.com