Nissan Rogue (T33) 2021-Present Service Manual: 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 |
|
| 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.
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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.
-
Turn ignition switch OFF and wait at least 10 seconds.
-
Turn ignition switch ON.
-
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.
-
Start the engine and warm it up to the normal operating temperature.
-
Wait at least 20 seconds.
-
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
-
Erase DTC.
-
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
-
Start the engine.
-
On CONSULT screen, select “ENGINE”>>“Active Test”>>“Charge air cooler cooling electric water pump”.
-
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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CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
Check that the indicator lamp of rear window defogger illuminates when rear window defogger switch ON.
Is the inspection result normal?
YES>>
Rear window defogger switch function is OK.
NO>>
Refer to Diagnosis P ...