Nissan Sentra B18 (2020-2025) Service Manual: C1f03-23 Operation Sw Circ
Dtc Description
DTC Description
DTC DETECTION LOGIC
|
DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
||
|---|---|---|---|---|
|
C1F03 |
23 |
CONTROL UNIT (Control unit) |
Diagnosis condition |
|
|
Signal (terminal) |
— |
|||
|
Threshold |
Any switch of the ICC steering switch is detected as “ON” |
|||
|
Diagnosis delay time |
Continuously 60 seconds |
|||
POSSIBLE CAUSE
-
ICC steering switch circuit
-
ICC steering switch
-
ECM
FAIL-SAFE
The following systems are canceled.
-
Nissan Sentra Vehicle-to-vehicle distance control mode
-
Conventional (fixed speed) cruise control mode
Confirmation Procedure
Confirmation Procedure
DTC CONFIRMATION PROCEDURE
-
CHECK DTC PRIORITY
If DTC “C1F03-23” is displayed with Network-DTC, first diagnose the Network-DTC.
Is applicable DTC detected?
YES >>Perform diagnosis of applicable. DTC Index
NO >>GO TO 2 .
-
PERFORM DTC CONFIRMATION PROCEDURE
-
Start the engine.
-
Wait for approximately 5 minutes after turning the ICC MAIN switch ON.
-
Perform “All DTC Reading” with CONSULT.
-
Check if the “C1F03-23” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS 2”.
Is “C1F03-23” detected as the current malfunction?
YES >>DTC Diagnosis Procedure
NO-1 >>To check malfunction symptom before repair: Intermittent Incident
NO-2 >>Confirmation after repair: INSPECTION END
-
Dtc Diagnosis Procedure
DTC Diagnosis Procedure
-
CHECK DTC PRIORITY
If DTC “C1F03-23” is displayed with Network-DTC, first diagnose the Network-DTC.
Is applicable DTC detected?
YES >>Perform diagnosis of applicable. DTC Index
NO >>GO TO 2 .
-
CHECK ICC STEERING SWITCH
-
Turn the ignition switch OFF.
-
Disconnect the ICC steering switch connector.
-
Check the ICC steering switch. Refer to Component Inspection.
Is the inspection result normal?
YES >>GO TO 3.
NO >>Replace the ICC steering switch.
-
-
CHECK HARNESS BETWEEN SPIRAL CABLE AND ECM
-
Disconnect the ECM connector.
-
Check for continuity between the spiral cable harness connector and ECM harness connector.
Spiral cable
ECM
Continuity
Connector
Terminal
Connector
Terminal
M30
8
E16
144
Existed
1
145
-
Check for continuity between spiral cable harness connector and ground.
Spiral cable
Ground
Continuity
Connector
Terminal
M30
8
Not existed
1
Is the inspection result normal?
YES >>GO TO 4.
NO >>Repair the harnesses or connectors.
-
-
CHECK SPIRAL CABLE
Check for continuity between spiral cable terminals.
Spiral cable
Continuity
Terminal
21
8
Existed
36
1
Is the inspection result normal?
YES >>GO TO 5.
NO >>Replace the spiral cable.
-
PERFORM SELF-DIAGNOSIS OF ECM
-
Connect the connectors of ICC steering switch and ECM connector.
-
Turn the ignition switch ON.
-
Perform “All DTC Reading”.
-
Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”.
Is any DTC detected?
YES >>Perform self-diagnosis on the detected DTC and repair or replace the malfunctioning parts. DTC Index
NO >>Replace the ADAS control unit 2. Removal and Installation
-
Component Inspection
Component Inspection
-
CHECK ICC STEERING SWITCH
Check resistance between ICC steering switch terminals.
Terminal
Switch operation
Resistance [Ω]
21
36
When pressing MAIN switch
Approx. 0
When pressing CANCEL switch
Approx. 309
When pressing DISTANCE switch
Approx. 741
When pressing SET switch
Approx. 1406
When pressing RES+ switch
Approx. 2586
When all switches are not pressed
Approx. 5456
Is the inspection result normal?
YES >>INSPECTION END
NO >>Replace the ICC steering switch.
Other materials:
The System Does Not Detect the Vehicle Ahead at All
Diagnosis Procedure
Diagnosis Procedure
When AEB system is active, the AEB system does not perform any
control even though there is a vehicle ahead.
CHECK INFORMATION DISPLAY
Start the “Self Diagnosis”
of combination meter. Refer to De ...
B Terminal Circuit. Diagnosis Procedure
Diagnosis Procedure
Diagnosis Procedure
“B” terminal circuit supplies power to charge the
battery and to operate the vehicles electrical system.
CHECK “B” TERMINAL CONNECTION
Ignition switch OFF.
...
A/c Switch Assembly Signal Circuit
Diagnosis Procedure
Diagnosis Procedure
CHECK WITH SELF DIAGNOSTIC RESULT FUNCTION
CONSULT
Select “Self Diagnostic Result” mode of “HVAC”.
Check DTC.
...