DCA

C1A03 VEHICLE SPEED SENSOR





Description
The ICC sensor integrated unit receives the vehicle speed signal (wheel speed) from ABS actuator and electric unit (control unit) and the A/T vehicle speed sensor signal (output shaft revolution signal) from TCM via
CAN communication.




DTC Logic

DTC DETECTION LOGIC

DTC Detection Logic:

NOTE:
If DTC "C1A03" is detected along with DTC "U1000" or "C1A04", first diagnose the DTC "U1000" or "C1A04".
- Refer to DCA for DTC "U1000".
- Refer to DCA for DTC "C1A04".

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the DCA switch ON.
3. Drive the vehicle at 30 km/h (19 MPH) or more.

CAUTION:
Always drive safely.
4. Stop the vehicle.
5. Perform "All DTC Reading" with CONSULT-III.
6. Check if the "C1A03" is detected as the current malfunction in self-diagnosis results of "ICC".
Is "C1A03" detected as the current malfunction?
YES - Refer to DCA.
NO - Refer to Intermittent Incident.




Diagnosis Procedure
1.CHECK SELF-DIAGNOSIS RESULTS
Check if "C1A04" or "U1000" is detected other than "C1A03" in "Self Diagnostic Result" of "ICC".
Is any DTC detected?
YES - Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to Testing and Inspection.
NO - GO TO 2.
2.CHECK DATA MONITOR
1. Start the engine.
2. Drive the vehicle.
3. Check that the value of "VHCL SPD AT" is almost the same as the value of "VHCL SPEED SE" in "DATA
MONITOR" of "ICC".

CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES - Replace the ICC sensor integrated unit. Refer to Exploded View.
NO - GO TO 3.
3.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 Testing and Inspection (VQ35HR) or Testing and Inspection (VK50VE).
NO - GO TO 4.
4.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
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 Testing and Inspection.
NO - Replace the ICC sensor integrated unit. Refer to Exploded View.




Special Repair Requirement

DESCRIPTION
Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following operation is performed.
- Removal and installation of ICC sensor integrated unit
- Replacement of ICC sensor integrated unit

SPECIAL REPAIR REQUIREMENT
1.LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT
Adjust the laser beam aiming of the ICC sensor integrated unit. Refer to ICC (Full Speed Range) ICC (Full Speed Range) Description
- GO TO 2.
2.CHECK DCA SYSTEM
1. Erase the "self-diagnosis results", and then perform "All DTC Reading" again after performing the action test. (Refer to DCA for action test.)
2. Check that the DCA system is normal.
- WORK END