Nissan Murano: Dtc/circuit Diagnosis / C1a21 Unit High Temp

Nissan Murano (Z52) 2015-2024 Service Manual / Cruise Control & Driver Assistance / Cruise Control System :: Icc / Dtc/circuit Diagnosis / C1a21 Unit High Temp

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen terms DTC detection condition
C1A21–48

UNIT HIGH TEMP

(Unit high temperature)
Diagnosis condition When Ignition switch is ON.
Signal (terminal)
Threshold Temperature around distance sensor (ICC sensor) is high.
Diagnosis delay time

POSSIBLE CAUSE

  • Temperature around the distance sensor (ICC sensor) becomes extremely high.

FAIL-SAFE

The following systems are canceled:

  • Intelligent Cruise Control

  • Automatic Emergency Braking (AEB)

  • Intelligent Forward Collision Warning (I-FCW)

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Turn the ignition switch OFF.

  2. Wait for 10 minutes or more.

  3. Start the engine.

  4. Turn the MAIN switch of ICC system ON.

  5. Perform “All DTC Reading” with CONSULT.

  6. Check if the “C1A21–48” is detected as the current malfunction in “Self Diagnostic Result” mode of “LASER/RADAR”.

Is “C1A21–48” detected as the current malfunction?

YES>>

Refer to Diagnosis Procedure.

NO>>

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

NO>>

Confirmation after repair: Inspection End.

Diagnosis Procedure

CHECK ENGINE COOLING SYSTEM

Check for any malfunctions in engine cooling system.

Is engine cooling system normal?

YES>>

Replace the distance sensor (ICC sensor). Refer to Removal and Installation.

NO>>

Repair engine cooling system.

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    Categories

    Fuel gauge

    Nissan Murano. Fuel gauge

    The gauge indicates the approximate fuel level in the tank.

    The gauge may move slightly during braking, turning, acceleration, or going up or down hills.

    The gauge needle returns to 0 (Empty) after the ignition switch is placed in the OFF position.

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