Nissan Juke Service and Repair Manual : Insufficient heating

Description

Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

Diagnosis Procedure

NOTE

:
Perform self-diagnosis with CONSULT-III before performing symptom diagnosis. If any malfunction result or DTC is detected, perform the corresponding diagnosis.

1.CHECK COOLING SYSTEM

1. Check engine coolant level and check for leakage. Refer to the following.

- HR16DE: Refer to CO-37, "Inspection".

- MR16DDT: Refer to CO-11, "Inspection".

- K9K: Refer to CO-62, "Inspection".

2. Check radiator cap (HR16DE and MR16DDT) or reservoir tank cap (K9K). Refer to the following.

- HR16DE: Refer to CO-40, "RADIATOR CAP : Inspection".

- MR16DDT: Refer to CO-15, "RADIATOR CAP : Inspection".

- K9K: Refer to CO-65, "Inspection".

3. Check water flow sounds of the engine coolant. Refer to the following.

- HR16DE: Refer to CO-38, "Refilling".

- MR16DDT: Refer to CO-12, "Refilling".

- K9K: Refer to CO-63, "Refilling".

Is the inspection result normal? YES-1 >> HR16DE and MR16DDT: GO TO 3.

YES-2 >> K9K: GO TO 2.

NO >> Refill engine coolant and repair or replace the parts depending on the inspection results.

2.CHECK PTC HEATER OPERATION

Check PTC heater operation. Refer to HAC-294, "Component Function Check".

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace parts depending on the inspection results.

3.CHECK HEATER HOSE

Check installation of heater hose by visually or touching.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace parts depending on the inspection results.

4.CHECK HEATER CORE

1. Check temperature of inlet hose and outlet hose of heater core.

2. Check that inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the inlet side.

CAUTION:
Always perform the temperature inspection in a short period of time because the engine coolant temperature is very hot.

Is the inspection result normal?

YES >> GO TO 5.

NO-1 >> HR16DE: Replace heater core. Refer to HA-56, "HEATER CORE : Removal and Installation".

NO-2 >> MR16DDT: Replace heater core. Refer to HA-116, "HEATER CORE : Removal and Installation".

NO-3 >> K9K: Replace heater core.

5.CHECK AIR LEAKAGE FROM EACH DUCT

Check duct and nozzle, etc. of air conditioning system for air leakage.

Is the inspection result normal? YES >> Check air mix door cable installation and air mix door operation.

NO >> Repair or replace parts depending on the inspection results.

    Insufficient cooling
    Description Symptom • Insufficient cooling • No cool air comes out. (Air flow volume is normal.) Diagnosis Procedure NOTE: Perform self-diagnosis with CONSULT-III before performing symptom d ...

    Compressor dose dot operate
    Description SYMPTOM Compressor dose not operate. Diagnosis Procedure NOTE: • Perform self-diagnosis with CONSULT-III before performing symptom diagnosis. If any malfunction result or DTC is ...

    Other materials:

    Cylinder block
    Disassembly and Assembly PREPARING USED ENGINE The engine should be cleaned and drained (oil and water). Leave on the used engine or include in the return box: • Oil filter • Oil pressure switch • Water pump • Fuel injection pump • Rail • Injectors • Glow plugs • Oil lev ...

    Key reminder function does not operate
    Diagnosis Procedure 1.CHECK DOOR LOCK AND UNLOCK SWITCH Check door lock and unlock switch. Refer to DLK-520, "Component Function Check". Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace the malfunctioning parts. 2.CHECK KEY SWITCH Check k ...

    P1550 battery current sensor
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously 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. ...