Nissan Rogue (T33) 2021-Present Service Manual: P14a9 Charge Air Cooler Cooling Electric Water Pump

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P14a9 Charge Air Cooler Cooling Electric Water Pump

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P14A9

Charge air cooler cooling electric W/P

(Charge air cooler cooling electric water pump) 		Diagnosis condition

  • Engine running at idle

  • Warm-up condition

  • Battery voltage: More than 11V
Signal (terminal) —
Threshold Pump response duty becomes 83 – 92% after maintaining 2 – 8% (pump side: under protection control)
Diagnosis delay time 12 – 19 seconds

POSSIBLE CAUSE

  • Charge air cooler (CAC) coolant leakage

  • CAC coolant is mixed in air.

  • Protection control is activated during pump idle running.

  • 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 1st trip DTC.

Is DTC P14A9 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

CHECK COOLANT LEVEL

Check the coolant level at the charge air cooler (CAC) coolant reservoir tank. Refer to Inspection.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK CAC COOLING SYSTEM FOR COOLANT LEAKAGE

Check CAC cooling system for coolant leakage. Refer to Inspection.

Is the inspection result normal?

YES-1>>

With CONSULT: Refill coolant until the specified range. Refer to Refilling. And then, GO TO 4.

YES-2>>

Without CONSULT: GO TO 3.

NO>>

Repair or replace error-detected parts.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Erase DTC.

  2. Perform DTC confirmation procedure. Refer to DTC Description.

Is the DTC P14A9 detected again?

YES>>

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

NO>>

INSPECTION END

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. Perform the test and check that the water pump 1 is activated.

Is the inspection result normal?

YES>>

INSPECTION END (Protection mode operation)

NO>>

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

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