Nissan Rogue (T33) 2021-Present Service Manual: P023b Charge Air Cooler Cooling Electric Water Pump

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P023b Charge Air Cooler Cooling Electric Water Pump

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P023B 00

Charged air cooler coolant pump

(Charge air cooler coolant pump control circuit low) 		Diagnosis condition

  • Engine running at idle

  • Warm-up condition

  • Battery voltage: 11 – 16 V
Signal (terminal) Charge air cooler electric water pump signal
Threshold A signal duty of the charge air cooler electric water pump operation command sent from ECM is less than 2%
Diagnosis delay time 3 seconds or more

POSSIBLE CAUSE

  • Harness and connectors (Charge air cooler electric water pump command circuit is open or shorted.)

  • Charge air cooler electric water pump

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

NOTE:

When DTC Confirmation Procedure has been preciously conducted, always perform the following before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.

  2. Turn ignition switch ON.

  3. Turn ignition switch OFF and wait at least 10 seconds.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

NOTE:

Before performing this procedure, check that the battery voltage is more than 11 V during ignition switch ON.

  1. Start the engine and warm it up to the normal operating temperature.

  2. Wait at least 20 seconds.

  3. Check DTC.

Is DTC P023B detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

COMPONENT FUNCTION CHECK

With CONSULT

  1. Start the engine.

  2. On CONSULT screen, select “ENGINE”>>“Active Test”>>“Charge air cooler cooling electric water pump”.

  3. Check the value of charge air cooler electric water pump duty under the following conditions:

    Item Condition Value
    Electric water pump 1 duty Normal mode 20 – 80

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 2.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP HARNESS CONNECTOR INSTALLATION

Check charge air cooler electric water pump harness connector installation condition visually and tectually.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP POWER SUPPLY-I

  1. Turn ignition switch OFF.

  2. Disconnect charge air cooler electric water pump harness connector.

  3. Turn ignition switch ON.

  4. Check the voltage between charge air cooler electric water pump harness connector and ground.

    + − Voltage
    Charge air cooler electric water pump
    Connector Terminal
    E36 2 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

GO TO 4.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP POWER SUPPLY-II

  1. Turn ignition switch OFF.

  2. Disconnect electric water pump relay and electric purge pump relay harness connector.

  3. Turn ignition switch ON.

  4. Check the voltage between electric water pump relay and electric purge pump relay harness connector and ground.

    + − Voltage
    Electric water pump relay and electric purge pump relay
    Connector Terminal
    F103 6 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP POWER SUPPLY-III

  1. Turn ignition switch OFF.

  2. Check the voltage between electric water pump relay and electric purge pump relay harness connector and ground.

    + − Voltage
    Electric water pump relay and electric purge pump relay
    Connector Terminal
    F103 7 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

CHECK FUSE

  1. Pull out 15A fuse (No. 98) from fuse.

  2. Check that 15A fuse is not blowing.

Is the fuse blown (open)?

YES>>

Replace the fuse after repairing the applicable circuit.

NO>>

Perform the trouble diagnosis for power supply circuit.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP POWER SUPPLY CIRCUIT

  1. Check the continuity between electric water pump relay and electric purge pump relay and charge air cooler electric water pump harness connector.

    Electric water pump relay and electric purge pump relay Charge air cooler electric water pump Continuity
    Connector Terminal Connector Terminal
    F103 6 E36 2 Existed

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

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Repair or replace error-detected parts.

CHECK ELECTRIC WATER PUMP RELAY AND ELECTRIC PURGE PUMP RELAY

Check electric water pump relay and electric purge pump relay. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace electric water pump relay.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP GROUND CIRCUIT

  1. Check the continuity between charge air cooler electric water pump harness connector and ground.

    Charge air cooler electric water pump — Continuity
    Connector Terminal
    E36 4 Ground Existed

  2. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

Repair or replace error-detected parts.

CHECK CHARGE AIR COOLER ELECTRIC WATER PUMP CONTROL CIRCUIT

  1. Disconnect ECM harness connector.

  2. Check the continuity between ECM harness connector and charge air cooler electric water pump harness connector.

    ECM Charge air cooler electric water pump Continuity
    Connector Terminal Connector Terminal
    F72 39 E36 1 Existed
    32 3

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

Is the inspection result normal?

YES>>

Replace charge air cooler electric water pump. Refer to Removal and Installation.

NO>>

Repair or replace error-detected parts.

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