Driver Assistance System

C1A15 GEAR POSITION

Description

ADAS control unit judges the gear position based on the following signals.
- Current gear position signal transmitted from TCM via CAN communication.
- Value of gear ratio calculated from input speed signal transmitted from TCM via CAN communication.
- Value of gear ratio calculated from the vehicle speed signal transmitted from ABS actuator and electric unit (control unit) via CAN communication.


DTC Logic


DTC DETECTION LOGIC






NOTE:
If DTC "C1A15" is detected along with DTC "U1000", "C1A03", or "C1A04", first diagnose the DTC "U1000", "C1A03", or "C1A04".
- Refer to "ADAS CONTROL UNIT : DTC Logic" Blind Spot Warning & Blind Spot Intervention for DTC "U1000".
- Refer to "DTC Logic" C1A03 for DTC "C1A03".
- Refer to "DTC Logic" C1A04 for DTC "C1A04".

DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Start the engine.
2.Turn the Blind Spot Intervention system ON.
3.Drive the vehicle at 10 km/h (6 MPH) or faster for approximately 15 minutes or more.

CAUTION:
Always drive safely.
4.Stop the vehicle.
5.Perform "All DTC Reading" with CONSULT.
6.Check if "C1A15" is detected as the current malfunction in the "Self Diagnostic Result" of "ICC/ADAS".
Is "C1A15" detected as the current malfunction?
YES- Refer to "Diagnosis Procedure" .
NO- Refer to "Intermittent Incident" Intermittent Incident.


Diagnosis Procedure


1. CHECK SELF-DIAGNOSIS RESULTS

Check if "C1A03", "C1A04", or "U1000" is detected other than "C1A15" in "Self Diagnostic Result" of "ICC/
ADAS".
Is any DTC detected?
YES- Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
"DTC Index" A L L Diagnostic Trouble Codes ( DTC ).
NO- GO TO 2.

2. CHECK VEHICLE SPEED SIGNAL

Check that "VHCL SPEED SE" operates normally in "DATA MONITOR" of "ICC/ADAS".

CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
Revision: March 20122013 Infiniti JX
YES- GO TO 3.
NO- GO TO 7.

3. CHECK GEAR POSITION

Check that "GEAR" operates normally in "DATA MONITOR" of "ICC/ADAS".

CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. CHECK GEAR POSITION SIGNAL

Check that "GEAR" operates normally in "DATA MONITOR" of "TRANSMISSION".
Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 6.

5. CHECK INPUT SPEED SENSOR SIGNAL

Check that "INPUT SPEED" operates normally in "DATA MONITOR" of "TRANSMISSION".
Is the inspection result normal?
YES- Replace the ADAS control unit. Refer to "Removal and Installation" Removal and Installation.
NO- GO TO 6.

6. CHECK TCM SELF-DIAGNOSIS RESULTS

1.Perform "All DTC Reading".
2.Check if any DTC is detected in "Self Diagnostic Result" of "TRANSMISSION".
Is any DTC detected?
YES- Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
"DTC Index" A L L Diagnostic Trouble Codes ( DTC ).
NO- Replace the ADAS control unit. Refer to "Removal and Installation" Removal and Installation.

7. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

1.Perform "All DTC Reading".
2.Check if any DTC is detected in "Self Diagnostic Result" of "ABS".
Is any DTC detected?
YES- Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
"DTC Index" A L L Diagnostic Trouble Codes ( DTC ).
NO- Replace the ADAS control unit. Refer to "Removal and Installation" Removal and Installation.
Revision: March 20122013 Infiniti JX