Nissan Murano: Dtc/circuit Diagnosis / C1a21 Unit High Temp
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)
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
-
Turn the ignition switch OFF.
-
Wait for 10 minutes or more.
-
Start the engine.
-
Turn the MAIN switch of ICC system ON.
-
Perform “All DTC Reading” with CONSULT.
-
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.
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.
C1a18 Radar Aiming Incmp
DTC Description
DTC DETECTION LOGIC DTC No. CONSULT screen terms DTC detection condition
C1A18–54
LASER AIMING INCMP
Diagnosis condition
When Ignition switch is ON...
C1a23 Unit Low Temp
DTC Description
DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detecting condition
C1A23
(97)
UNIT LOW TEMP
Temperature detected by the temperature sensor integrated in distance sensor (ICC sensor) remains less than -40 °C for 5 seconds or more
POSSIBLE CAUSETemperature around the distance sensor (ICC sensor) becomes extremely lowFAIL-SAFEThe following systems are canceled...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: Seat Belt Warning Lamp System
System Description SYSTEM DIAGRAMSystem DescriptionThe seat belt warning lamp (1) will remind the driver if the driver or front passenger seat belt should be buckled. The seat belt warning display (2) will remind the driver if the rear seat belt should be buckled...
Nissan Murano (Z52) 2015-2024 Service Manual: Low Tire Pressure Warning Lamp Does Not Turn on
Diagnosis Procedure NOTE: The Signal Tech II Tool [– (J-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS sensor IDs Display tire pressure reported by the TPMS sensor Read TPMS DTCs Register TPMS sensor IDs PERFORM SELF DIAGNOSTIC RESULT CONSULT Ignition switch ON...
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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.
