2007 INFINITI M35 control unit

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
ACS-33
[ICC]
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Revision: 2007 April2007 M35/M45
ACTIVE TEST
CAUTION:

Never perform the active test while driving.

“ACTIVE TEST” cannot be started while ICC system warning lamp illuminates.
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch any of “ICC BUZZER”, “METER LAMP” and “STOP
LAMP” on selection screen.
3. Touch necessary item and “START”.
4. “ACTIVE TEST” screen will be shown.
ICC BUZZER
Touch “TEST START” and “RESET” in “MODE2” to check if ICC
warning chime operates as in the following chart.
NP RANGE SW
[ON/OFF]×Indicates A/T position indicator lamp signal read from ICC sensor integrated
unit through CAN communication (TCM transmits A/T position indicator
lamp signal through CAN communication).
VHCL SPD AT
[km/h] or [mph]×Indicates vehicle speed calculated from A/T vehicle speed sensor read from
ICC sensor integrated unit through CAN communication (TCM transmits A/
T vehicle speed sensor signal through CAN communication).
GEAR
[1, 2, 3, 4, 5]×Indicates A/T gear position read from ICC sensor integrated unit through
CAN communication (TCM transmits current gear position signal through
CAN communication).
MODE SIG
[OFF, ICC, ASCD]×Indicates the active mode from ICC or ASCD (conventional (fixed speed)
cruise control mode).
SET DISP IND
[ON/OFF]×Indicates [ON/OFF] status of SET switch indicator output.
DISTANCE
[m]×Indicates the distance from the vehicle ahead.
RELATIVE SPD
[m/s]×Indicates the relative speed of the vehicle ahead. Monitored Item [unit]MAIN
SIGNALSSELEC-
TION FROM
MENUDescription
PKIB8366E
BUZZER O/P ON OFF
Buzzer sound Beep Not activated
PKIB8368E

ACS-40
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:25962
Diagnostic Trouble Code (DTC) ChartNKS004CZ
×: Applicable
DTC
No.CONSULT-II
screen termsICC
system
warning
lampFail-safe
Malfunctions detected where...Refer-
ence
page Vehicle-
to-
vehicle
distance
control
modeConven-
tional
(fixed
speed)
cruise
control
modeBrake
assist
(with
preview
function)
0CONTROL UNIT
[C1A00]××××

ICC sensor integrated unit internal
malfunction.ACS-42
1POWER SUPPLY CIR
[C1A01]××××

ICC sensor integrated unit power
supply voltage is excessively low
(less than 8V).ACS-42
2POWER SUPPLY CIR 2
[C1A02]××××

ICC sensor integrated unit power
supply voltage is excessively high
(more than 19V).ACS-42
3VHCL SPEED SE CIRC
[C1A03]××××

Wheel sensor malfunction.

ABS actuator and electric unit
(control unit) malfunction.

A/T vehicle speed sensor mal-
function.

TCM malfunction.

ICC sensor integrated unit mal-
function.ACS-43
4ABS/TCS/VDC CIRC
[C1A04]××××
VDC/TCS/ABS system malfunc-
tion.ACS-43
5BRAKE SW/STOP L SW
[C1A05]××××

Stop lamp switch harness is open
or shorted.

Stop lamp switch is stuck to OFF.

ICC brake switch or stop lamp
switch is stuck to ON.

ECM malfunction.

ABS actuator and electric unit
(control unit) malfunction.ACS-44
6OPERATION SW CIRC
[C1A06]×××

ICC steering switch harness or
spiral cable is open or shorted.

ICC steering switch malfunction.ACS-48
12LASER BEAM OFFCNTR
[C1A12]×× ×
Laser beam of ICC sensor inte-
grated unit is off the aiming point.ACS-49
13STOP LAMP RLY FIX
[C1A13]×× ×

Normally open terminal of ICC
brake hold relay is stuck.

Improper installation of ICC brake
switch or stop lamp switch.

ICC brake switch malfunction.

ECM malfunction.

ABS actuator and electric unit
(control unit) malfunction.ACS-50

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
[ICC]
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Revision: 2007 April2007 M35/M45
14ECM CIRCUIT
[C1A14]××××

ECM malfunction.

Accelerator pedal position sensor
malfunction.

ICC sensor integrated unit mal-
function.ACS-56
15GEAR POSITION
[C1A15]×××

TCM malfunction.

A/T turbine revolution sensor mal-
function.

A/T vehicle speed sensor mal-
function.ACS-57
16RADAR STAIN
[C1A16]×× ×
ICC sensor integrated unit body
window has contamination.ACS-58
18LASER AIMING INCMP
[C1A18]×× ×
Laser beam aiming of ICC sensor
integrated unit is not adjusted.ACS-58
21UNIT HIGH TEMP
[C1A21]×× ×
Temperature around ICC sensor
integrated unit is excessively high.ACS-58
24NP RANGE
[C1A24]×××

Park/neutral position switch mal-
function.

TCM malfunction.ACS-59
25 SHIFT RANGE IND
[C1A25]×××
TCM malfunction.ACS-59
26ECD MODE MALF
[C1A26]×××

ABS actuator and electric unit
(control unit) malfunction.

ICC sensor integrated unit mal-
function.ACS-60
27ECD PWR SUPLY CIR
[C1A27]××××

ABS actuator and electric unit
(control unit) power supply voltage
is excessively low.

ABS actuator and electric unit
(control unit) malfunction.ACS-60
55NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
No malfunction item has been
detected. —
100CAN COMM CIRCUIT
[U1000]××××

ICC sensor integrated unit detects
CAN communication malfunction.ACS-61
11 0CONTROL UNIT (CAN)
[U1010]××××

ICC sensor integrated unit detects
malfunction by CAN initial diagno-
sis.ACS-61
DTC
No.CONSULT-II
screen termsICC
system
warning
lampFail-safe
Malfunctions detected where...Refer-
ence
page Vehicle-
to-
vehicle
distance
control
modeConven-
tional
(fixed
speed)
cruise
control
modeBrake
assist
(with
preview
function)

ACS-42
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2007 April2007 M35/M45
DTC 0 CONTROL UNITNKS004D0
1. PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if any item other than “CONTROL UNIT [C1A00]” (DTC 0) is indicated on self-diagnosis display.
Is any indicated?
YES >> 1. Repair or replace applicable item. Refer to ACS-40, "Diagnostic Trouble Code (DTC) Chart" .
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 1 POWER SUPPLY CIR, DTC 2 POWER SUPPLY CIR 2NKS004D1
1. CHECK CONNECTOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector, and connect it securely again.
3. Erase DTC and perform ICC running test. Then perform self-diagnosis of ICC system again.
4. Check if “POWER SUPPLY CIR [C1A01]” (DTC 1) or “ POWER SUPPLY CIR 2 [C1A02]” (DTC 2) is indi-
cated in self-diagnosis item in the display.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection
1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2. CHECK POWER SUPPLY CIRCUIT FOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector.
3. Turn ignition switch ON.
4. Check voltage between ICC sensor integrated unit harness con-
nector and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair or replace ICC sensor integrated unit power
supply harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Terminals
Voltag e
(Approx.) (+)
(–)
ICC sensor integrated
unit connectorTerminal
E61 1 Ground Battery voltage
PKIB8375E

ACS-44
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2007 April2007 M35/M45
2. PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-II
1. Perform “ABS” self-diagnosis. Refer to BRC-23, "
CONSULT-II Functions (ABS)" .
2. Check if malfunction is indicated.
Is malfunction indicated?
YES >> 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 5 BRAKE SW/STOP L SWNKS004D4
1. PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if “CAN COMM CIRCUIT [U1000]” (DTC 100) other than “BRAKE SW/STOP L SW [C1A05]” (DTC
5) is indicated in self-diagnosis item in the display.
Is it indicated?
YES >> 1. CAN communication inspection. Refer to ACS-61, "DTC 100 CAN COMM CIRCUIT" .
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NO >> GO TO 2.
2. CHECK ICC BRAKE SWITCH WITH ICC DATA MONITOR
With CONSULT-II
With “ICC” “DATA MONITOR”, check if “BRAKE SW” operates normally.
OK or NG
OK >> GO TO 3.
NG >> GO TO 6.
3. CHECK STOP LAMP SWITCH WITH ABS DATA MONITOR
With CONSULT-II
With “ABS” “DATA MONITOR”, check if “STOP LAMP SW” operates normally.
OK or NG
OK >> GO TO 4.
NG >> GO TO 11.
4. PERFORM ECM SELF-DIAGNOSIS
With CONSULT-II
1. Perform “ENGINE” self-diagnosis. Refer to EC-123, "
CONSULT-II Function (ENGINE)" (for VQ35DE) or
EC-826, "
CONSULT-II Function (ENGINE)" (for VK45DE).
2. Check if malfunction is indicated.
Is malfunction indicated?
YES >> 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> GO TO 5.

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-45
[ICC]
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ACS
Revision: 2007 April2007 M35/M45
5. PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-II
1. Perform “ABS” self-diagnosis. Refer to BRC-23, "
CONSULT-II Functions (ABS)" .
2. Check if malfunction is indicated.
Is malfunction indicated?
YES >> 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
6. CHECK ICC BRAKE SWITCH INSTALLATION AND ADJUSTMENT
Check ICC brake switch for proper installation, and adjust the switch if necessary. Refer to BR-6, "
BRAKE
PEDAL" .
OK or NG
OK >> GO TO 7.
NG >> 1. Adjust ICC brake switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
7. CHECK ICC BRAKE SWITCH
Check ICC brake switch. Refer to ACS-69, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK >> GO TO 8.
NG >> 1. Replace ICC brake switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
8. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch connector.
3. Turn ignition switch ON.
4. Check voltage between ICC brake switch harness connector
and ground.
OK or NG
OK >> GO TO 9.
NG >> 1. Repair or replace harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Terminals
Voltage
(Approx.) (+)
(–)
ICC brake switch
connectorTe r m i n a l
E111 1 Ground Battery voltage
PKIB9335E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
[ICC]
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ACS
Revision: 2007 April2007 M35/M45
13. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Turn ignition switch ON.
4. Check voltage between stop lamp switch harness connector and
ground.
OK or NG
OK >> GO TO 14.
NG >> 1. Repair or replace harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
14. CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT)
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check continuity between stop lamp switch harness connector
(A) and ABS actuator and electric unit (control unit) harness
connector (B).
4. Check continuity between stop lamp switch harness connector
(A) and ground.
OK or NG
OK >> 1. Perform “ABS” self-diagnosis. Refer to BRC-23, "CONSULT-II Functions (ABS)" .
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NG >> 1. Repair or replace harness between stop lamp switch and ABS actuator and electric unit (control
unit).
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Terminals
Voltage
(Approx.) (+)
(–)
Stop lamp switch
connectorTe r m i n a l
E124 3 Ground Battery voltage
PKIC0833E
AB
Continuity
Connector Terminal Connector Terminal
E124 4 E30 30 Yes
A
GroundContinuity
Connector Terminal
E124 4 No
PKIC0834E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-55
[ICC]
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ACS
Revision: 2007 April2007 M35/M45
19. PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-II
1. Perform “ABS” self-diagnosis. Refer to BRC-23, "
CONSULT-II Functions (ABS)" .
2. Check if malfunction is indicated.
Is malfunction indicated?
YES >> 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
20. CHECK STOP LAMP SWITCH INSTALLATION AND ADJUSTMENT
Check stop lamp switch for proper installation, and adjust the switch if necessary. Refer to BR-6, "
BRAKE
PEDAL" .
OK or NG
OK >> GO TO 21.
NG >> 1. Adjust stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
21. CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to ACS-69, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK >> GO TO 22.
NG >> 1. Replace stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
22. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Turn ignition switch ON.
4. Check voltage between stop lamp switch harness connector and
ground.
OK or NG
OK >> GO TO 23.
NG >> 1. Repair or replace harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Terminals
Voltage
(Approx.) (+)
(–)
Stop lamp switch
connectorTe r m i n a l
E124 3 Ground Battery voltage
PKIC0833E