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: Fuel System :: Disassembly and Assembly. Fuel Level Sensor Unit
Exploded View Fuel Level Sensor Unit 1. Fuel level sensor unit 2. Fuel tank temperature sensor A. Fuel level sensor unit harness connector B. Fuel pump harness connector C. Fuel tank temperature sensor harness connector D. Float arm assembly Disassembly and Assembly DisassemblyNOTE: Before disassembly, note the proper placement of the wires to the correct terminals and correct wire routing to the terminals...
Nissan Murano (Z52) 2015-2024 Service Manual: Starting System :: Service Data and Specifications (sds). Starter Motor
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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.
