Infiniti FX35, FX50 (S51). Manual — part 309

CCS-56

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2

Check that the ICC system is normal.

>> WORK END

CCS

C1A03 VEHICLE SPEED SENSOR

CCS-57

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A03 VEHICLE SPEED SENSOR

Description

INFOID:0000000005501581

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

DTC Logic

INFOID:0000000005501582

DTC DETECTION LOGIC

NOTE:
If DTC “C1A03” is detected along with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
• Refer to

CCS-137, "DTC Logic"

for DTC “U1000”.

• Refer to

CCS-59, "DTC Logic"

for DTC “C1A04”.

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Start the engine.

Turn the MAIN switch of ICC system ON.

Drive the vehicle at 30 km/h (19 MPH) or more.

CAUTION:

Always drive safely.

Stop the vehicle.

Perform “All DTC Reading” with CONSULT-III.

Check if the “C1A03” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”.

Is “C1A03” detected as the current malfunction?

YES

>> Refer to

CCS-57, "Diagnosis Procedure"

>> Refer to

GI-36, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000005501583

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

CCS-162, "DTC Index"

>> GO TO 2.

CHECK DATA MONITOR

Start the engine.

Drive the vehicle.

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.

DTC

(On board

display)

Trouble diagnosis

name

DTC detecting condition

Possible causes

C1A03

(3)

VHCL SPEED SE
CIRC

If 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, received by
the ICC sensor integrated unit via CAN commu-
nication, are inconsistent

• Wheel speed sensor
• ABS actuator and electric unit (control

unit)

• Vehicle speed sensor A/T (output speed

sensor)

• TCM
• ICC sensor integrated unit

CCS-58

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A03 VEHICLE SPEED SENSOR

Is the inspection result normal?

YES

>> Replace the ICC sensor integrated unit. Refer to

CCS-184, "Exploded View"

>> GO TO 3.

CHECK TCM SELF-DIAGNOSIS RESULTS

Perform “All DTC Reading”.

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

TM-150, "DTC Index"

(VQ35HR) or

TM-332, "DTC Index"

(VK50VE).

>> GO TO 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

BRC-119, "DTC Index"

>> Replace the ICC sensor integrated unit. Refer to

CCS-184, "Exploded View"

Special Repair Requirement

INFOID:0000000005501584

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

LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Refer to

CCS-13, "LASER BEAM AIMING

ADJUSTMENT : Description"

>> GO TO 2.

CHECK ICC SYSTEM

Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to

CCS-18, "ACTION TEST : Description"

for action test.)

Check that the ICC system is normal.

>> WORK END

CCS

C1A04 ABS/TCS/VDC SYSTEM

CCS-59

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A04 ABS/TCS/VDC SYSTEM

Description

INFOID:0000000005501585

ABS actuator and electric unit (control unit) transmits the vehicle speed signal (wheel speed), and VDC/TCS/
ABS system operation condition to ICC sensor integrated unit via CAN communication.

DTC Logic

INFOID:0000000005501586

DTC DETECTION LOGIC

NOTE:
If DTC “C1A04” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to

CCS-137,

"DTC Logic"

Diagnosis Procedure

INFOID:0000000005501587

CHECK SELF-DIAGNOSIS RESULTS

Perform “All DTC Reading” with CONSULT-III.

Check if the “U1000” is detected other than “C1A04” in “Self Diagnostic Result” of “ICC”.

Is “U1000” detected?