Infiniti QX4. Electrical System (2003 year). Manual — part 20
Trouble Diagnosis - General Description
NBEL0467
WORK FLOW
NBEL0467S01
SKIA1227E
쐌
Reference 1··· Refer to “Self-Diagnostic Function” EL-315.
쐌
Reference 2··· Refer to “Diagnostic Trouble Code (DTC) Chart”
EL-320.
쐌
Reference 3··· Refer to “Symptom Chart” EL-360.
쐌
Reference 4··· Refer to “SELF-DIAGNOSIS BY CONSULT-II
WILL NOT RUN” EL-317/“SELF-DIAGNOSIS BY ICC SYS-
TEM DISPLAY WILL NOT RUN” EL-318.
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INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description
EL-309
CONSULT-II FUNCTION
NBEL0467S02
Description
NBEL0467S0201
CONSULT-II executes following functions by combining data
reception and command transmission via communication line from
ICC unit.
Test mode
Function
WORK SUPPORT
쐌
Monitors aiming direction to facilitate laser beam aiming operation.
쐌
Indicates causes of automatic cancellation of the ICC system.
SELF-DIAGNOSTIC
RESULTS
Displays malfunctioning system memorized in ICC unit.
DATA MONITOR
Displays real-time input/output data of ICC unit.
ACTIVE TEST
Enables operation check of electrical loads by sending driving signal to them.
ECU PART NUMBER
Displays part number of ICC unit.
Work Support
NBEL0467S0202
Work Item
Operation
Function
LASER BEAM ADJUST
Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction.
CAUSE OF AUTO-CANSEL
Indicates causes of automatic cancellation of the ICC system.
LASER BEAM ADJUST
For details, refer to “LASER BEAM AIMING ADJUSTMENT”
EL-286.
CAUSE OF AUTO-CANCEL
1.
Turn ignition switch OFF.
2.
Connect CONSULT-II to data link connector.
3.
Turn ignition switch ON.
4.
Touch “START” on the display.
5.
Touch “ICC” on the selection screen.
6.
Touch “WORK SUPPORT” on the selection screen.
7.
Touch “CAUSE OF AUTO-CANCEL” on the selection screen.
8.
Cause of automatic cancellation screen will be shown.
CAUTION:
Last five cancel (system cancel) causes are displayed.
Display Item List
Cause of cancellation
Description
OPERATING WIPER
Windshield wipers were operated at HI or LO speed and the fastest position of intermit-
tent operation.
OPERATING ABS
ABS was operated.
OPE SW VOLT CIRC
Outside the standard control switch input voltage was detected.
LASER SUN BEAM
Intense light such as sunlight entered ICC sensor light sensing part.
LASER TEMP
Temperature around ICC sensor became low.
OP SW DOUBLE TOUCH
Multiple control switches were pressed at the same time.
TIRE SLIP
Wheel slipped.
PKB SW ON
Parking brake is applied.
IGN LOW VOLT
Power supply voltage became low.
NO RECORD
—
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-310
Self-diagnostic Results
NBEL0467S0205
For details, refer to “Diagnostic Trouble Code (DTC) Chart” EL-320.
Data Monitor
NBEL0467S0206
1.
Turn ignition switch OFF.
2.
Connect CONSULT-II to data link connector.
3.
Turn ignition switch ON.
4.
Touch “START” on the display.
5.
Touch “ICC” on the selection screen.
6.
Touch “DATA MONITOR” on the selection screen.
7.
Touch any of “ECU INPUT SIGNALS”, “MAIN SIGNALS”,
“CAN DIAG SUPPORT MNTR”, and “SELECTION FROM
MENU” on selection screen.
8.
Touch “SETTING”.
9.
Display the data monitor.
10. If necessary, touch “PRINT” in turn, and print data.
Monitored Item
×
: Applicable
Monitored Item [unit]
MAIN SIG-
NALS
ECU INPUT
SIGNALS
CAN DIAG
SUPPORT
MNTR
SELEC-
TION
FROM
MENU
Description
VHCL SPEED SE
[km/h] or [mph]
×
×
×
Indicates vehicle speed calculated from
wheel speed sensor signal.
SET VHCL SPD
[km/h] or [mph]
×
×
Indicates set vehicle speed memorized in
ICC unit.
ENGINE RPM
[rpm]
×
×
Indicates engine speed calculated from
tachometer signal.
DISTANCE ADJ
[SHOR/MID/LONG]
×
×
×
Indicates set distance memorized in ICC
unit.
WIPERSW
[OFF/LOW/HIGH]
×
×
Indicates wiper [OFF/LOW/HIGH] status.
MAIN SW [ON/OFF]
×
×
×
Indicates [ON/OFF] status as judged from
control switch signal.
CANSEL SW
[ON/OFF]
×
×
×
Indicates [ON/OFF] status as judged from
control switch signal.
SET/COAST SW
[ON/OFF]
×
×
×
Indicates [ON/OFF] status as judged from
control switch signal.
RESUME/ACC SW
[ON/OFF]
×
×
×
Indicates [ON/OFF] status as judged from
control switch signal.
CRUISE OPE
[ON/OFF]
×
×
Indicates whether controlling or not (ON
means “controlling”).
BRAKE SW [ON/OFF]
×
×
×
Indicates [ON/OFF] status as judged from
ICC brake switch signal.
STOP LAMP SW
[ON/OFF]
×
×
×
Indicates [ON/OFF] status as judged from
stop lamp switch signal.
RELEASE SW NO
[ON/OFF]
×
×
Indicates [ON/OFF] status as judged from
release switch signal.
ON when brake is depressed.
OFF when brake is not depressed.
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INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-311
Monitored Item [unit]
MAIN SIG-
NALS
ECU INPUT
SIGNALS
CAN DIAG
SUPPORT
MNTR
SELEC-
TION
FROM
MENU
Description
RELEASE SW NC
[ON/OFF]
×
×
Indicates [ON/OFF] status as judged from
release switch signal.
OFF when brake is depressed.
ON when brake is not depressed.
IDLE SW
[ON/OFF]
×
×
Indicates [ON/OFF] status of idle switch.
FULL SW
[ON/OFF]
×
×
Indicates [ON/OFF] status of Full switch.
BUZZER O/P
[ON/OFF]
×
Indicates [ON/OFF] status of ICC war out-
put.
ICC WARNING
[ON/OFF]
×
Indicates [ON/OFF] status of ICC system
warning lamp.
PRESS SENS
[bar]
×
×
×
Indicates brake fluid pressure value calcu-
lated from signal voltage of pressure sen-
sor.
THRTL SENSOR
[deg]
×
×
×
Indicates throttle angle calculated from sig-
nal voltage of throttle position sensor.
VACUUM PUMP
[msec]
×
×
Indicates vacuum pump driving pulse width
AIR VALVE
[msec]
×
×
Indicates air valve driving pulse width
STP LMP DRIVE
[ON/OFF]
×
×
Indicates [ON/OFF] status of brake hold
relay drive output.
GEAR
[1, 2, 3, 4, 5, 6]
×
×
Indicates AT gear position read shift sole-
noid A and shift solenoid B.
AT OD OFF
[ON/OFF]
×
Indicates [ON/OFF] status of OD cancel
output under control.
PWR SUP-VALVE
[ON/OFF]
×
×
Indicates [ON/OFF] status of power supply
relay to vacuum pump, air valve, and
release valve.
CRUISE SIGNAL
[ON/OFF]
×
Indicates whether controlling or not (ON
means “controlling”).
A SOL/V
×
×
Indicates [ON/OFF] status of shift solenoid
A signal
B SOL/V
×
×
Indicates [ON/OFF] status of shift solenoid
B signal
D RANGE SW
[ON/OFF]
×
×
Indicates [ON/OFF] status of “D” position
read by ICC unit.
CAN CIRC 1
[OK/UNKWN]
×
Indicates [OK/UNKWN] status of CAN com-
munication signal.
CAN CIRC 2
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 3
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 4
[OK/UNKWN]
×
UNKWN fixed display
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-312
Monitored Item [unit]
MAIN SIG-
NALS
ECU INPUT
SIGNALS
CAN DIAG
SUPPORT
MNTR
SELEC-
TION
FROM
MENU
Description
CAN CIRC 5
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 6
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 7
[OK/UNKWN]
×
Indicates [OK/UNKWN] status of CAN com-
munication signal.
CAN CIRC 8
[OK/UNKWN]
×
Indicates [OK/UNKWN] status of CAN com-
munication signal.
CAN CIRC 9
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 10
[OK/UNKWN]
×
Indicates [OK/UNKWN] status of CAN com-
munication signal.
CAN CIRC 11
[OK/UNKWN]
×
Indicates [OK/UNKWN] status of CAN com-
munication signal.
CAN CIRC 12
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 13
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 14
[OK/UNKWN]
×
UNKWN fixed display
CAN CIRC 15
[OK/UNKWN]
×
UNKWN fixed display
CAN COMM[OK/NG]
×
Indicates [OK/UNKWN] status of CAN com-
munication signal.
Active Test
NBEL0467S0207
CAUTION:
쐌
Do not perform the active test while driving.
쐌
Active test cannot be started while ICC system warning
indicator illuminates.
1.
Turn ignition switch OFF.
2.
Connect CONSULT-II to data link connector and start engine.
3.
Touch “START”, “ICC”, and “ACTIVE TEST” on CONSULT-II
display in turn.
4.
Touch necessary test item.
5.
Touch “START”.
6.
Active test screen will be shown.
SKIA1228E
ICC BUZZER 1
쐌
Touch “ON” and “OFF” to check that ICC warning chime oper-
ates as in the following chart.
BUZZER O/P
ON
OFF
Buzzer sound
Beep
Not activated
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INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-313
SKIA1229E
ICC WARNING LAMP
쐌
Touch “ON” and “OFF” to check that ICC warning lamp oper-
ates as in the following chart.
ICC WARNING LAMP
ON
OFF
ICC system warning
lamp (Orange)
Lamp ON
Lamp OFF
SKIA1231E
METER LAMP
쐌
Start engine.
쐌
Touch “ON” and “OFF” to check that ICC system display oper-
ates as in the following chart.
Operation
ON
OFF
ICC system display
Full illumination
OFF
SKIA1232E
STOP LAMP
쐌
Touch “ON” and “OFF” to check that stop lamp operates as in
the following chart.
STP LMP DRIVE
ON
OFF
Stop lamp
Lamp ON
Lamp OFF
SKIA1233E
BOOSTER SOL/V 3
쐌
Touch any of “MODE 1”, “MODE 2”, “MODE 3” to check that
following operation condition is caused by operating monitor
and brake pedal.
쐌
“START” is displayed 10 seconds after operation start. (Active
test is completed.)
PKIA0363J
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-314
SELF-DIAGNOSTIC FUNCTION
NBEL0467S03
With CONSULT-II
NBEL0467S0301
1.
Go to operation check after asking the customer for symptom
information. Refer to “ACTION TEST” EL-284.
2.
Stop vehicle, turn ignition switch OFF, then connect CON-
SULT-II connector to data link connector.
3.
With engine started, touch “START”, “ICC”, “SELF-DIAG
RESULTS” on CONSULT-II screen in this order.
CAUTION:
If “ICC” cannot be shown after several attempts, the ICC unit
may have had malfunction. Repair or replace it. Refer to
“SELF-DIAGNOSIS BY CONSULT-II WILL NOT RUN” EL-317.
4.
Self-diagnostic result appears on screen. If “NO DTC ···” is
shown, check ICC warning lamp. If any malfunction is
indicated, GO TO step 5.
5.
According to “Diagnostic Trouble Code (DTC) Chart” EL-320,
perform appropriate check, and repair or replace malfunction-
ing part as necessary.
6.
Turn ignition switch OFF.
7.
Start
engine
and
touch
“START”,
“ICC”,
“SELF-DIAG
RESULT”, and “ERASE” on CONSULT-II display in turn to
erase the memory.
CAUTION:
If the memory does not erase, go to 5.
8.
Perform ICC system running test (drive vehicle with ICC sys-
tem ON), and make sure that ICC warning lamp does not illu-
minate.
Without CONSULT-II
NBEL0467S0302
1.
Go to operation check after asking the customer for symptom
information. Refer to “ACTION TEST” EL-284.
2.
Stop the vehicle to start the self-diagnosis.
3.
Turn ignition switch OFF.
SKIA1235E
4.
Turn ignition switch ON, and within 5 to 10 seconds, press
ACCELERATE/RESUME switch 5 times. Then press COAST/
SET switch 5 times to start self-diagnosis.
CAUTION:
쐌
Do not start the engine.
쐌
Do not turn the ON/OFF switch ON.
쐌
When operation above is not completed within 5 to 10
seconds, start again from above go to 3.
쐌
If self-diagnosis mode cannot be start after several
attempts, the ICC unit may have had malfunction. Repair
or replace it. Refer to “SELF-DIAGNOSIS BY ICC SYSTEM
DISPLAY WILL NOT RUN” EL-318.
5.
When self-diagnosis mode is started, DTCs are shown on set
vehicle speed indicator.
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INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-315
SEL518Y
CAUTION:
쐌
DTCs will disappear after 5 minutes.
쐌
When more than one malfunctions are detected, a maxi-
mum of 3 code numbers can be stored; the latest malfunc-
tion will be displayed first.
6.
Check “Diagnostic Trouble Code (DTC) Chart” EL-320, and
repair or replace if necessary.
7.
After repair, erase DTCs stored in the ICC unit.
8.
DTC 55 will be shown.
9.
Turn ignition switch OFF to exit the diagnosis.
10. Perform ICC system running test (drive vehicle with ICC sys-
tem ON), and make sure that ICC warning lamp does not illu-
minate.
Self-Diagnostic Erasing Method
11. Stop the vehicle and turn the ignition switch OFF.
12. Turn ignition switch ON and start self-diagnosis.
13. During self-diagnosis mode, press CANSEL switch 5 times,
and DISTANCE switch 5 times in this order.
CAUTION:
쐌
Press them within 10 seconds after pressing CANSEL
switch at first.
쐌
When operation is not completed within 10 seconds, start
again.
14. DTC 55 will be shown.
CAUTION:
DTCs of an existing malfunction will not be erased.
15. Turn ignition switch OFF to exit the diagnosis.
16. Perform ICC system running test (drive vehicle with ICC sys-
tem ON), and make sure that ICC system warning lamp
(orange) does not illuminate.
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-316
Self-diagnosis by CONSULT-II Will Not Run
NBEL0467S0303
SKIA1238E
Possible Irregular Condition
Open or short lines
Trouble phenomenon
Malfunction causes
ICC unit power supply malfunction
No voltage supply from ignition switch
Ignition relay malfunctioned
Fuse blown
Harness open
Harness shorted
Ground cable not connected
Harness open
Harness shorted
CONSULT-II malfunction
Signal not transmitted to data link connec-
tor
Harness open
Harness shorted
CONSULT-II malfunction
ICC unit malfunction
1
CHECK CONSULT-II SYSTEM
쐌
Can CONSULT-II call other systems?
Yes or No
Yes
䊳
GO TO 2.
No
䊳
쐌
Check CONSULT-II body.
쐌
Check battery and harness.
2
CHECK POWER SUPPLY FOR ICC UNIT
쐌
Is ICC unit turned ON?
Yes or No
Yes
䊳
GO TO 3.
No
䊳
Check power supply system, and repair if necessary.
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INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-317
3
CHECK HARNESS FOR DATA LINK CONNECTOR
쐌
Is continuity between ICC unit and data link connector normal?
Yes or No
Yes
䊳
GO TO 4.
No
䊳
Harness repair
4
SELF-DIAGNOSIS CHECK
쐌
Disconnect ICC unit connector, and check terminals for bend and looseness. Securely connect it again.
쐌
Enter self-diagnosis mode?
Yes or No
Yes
䊳
Inspection is completed.
No
䊳
ICC unit replacement
Self-diagnosis by ICC System Display Will Not Run.
NBEL0467S0304
SEL519Y
Possible Irregular Condition
Open or short lines
Trouble phenomenon
Malfunction causes
ICC unit power supply malfunction
No voltage supply from ignition switch
Fuse blown
Harness open
Harness shorted
Ground cable not connected
Harness open
Harness shorted
ICC steering switch malfunction
No signal transmitted
Harness open
Harness shorted
Spiral cable open
Spiral cable shorted
Switch malfunction
Meter communication system malfunction
Signal not transmitted
Harness open
Harness shorted
Combination meter system malfunction
Indication not possible
Indicator malfunction
Indicator segments disappear.
ICC unit malfunction
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-318
1
CHECK ICC SYSTEM DISPLAY
쐌
When ignition switch is ON, do all displays illuminate?
Yes or No
Yes
䊳
GO TO 2.
No
䊳
GO TO 5.
2
CHECK ICC STEERING SWITCH
쐌
Check ICC steering switch. EL-376, “Refer to ICC Steering Switch”.
OK or NG
OK
䊳
GO TO 3.
NG
䊳
Replace ICC steering.
3
CHECK HARNESS BETWEEN ICC UNIT AND ICC STEERING SWITCH
쐌
Check harness and spiral cable between ICC unit and ICC steering switch for open or short circuit.
OK or NG
OK
䊳
GO TO 4.
NG
䊳
Replace ICC steering.
4
CHECK SELF-DIAGNOSIS
쐌
Disconnect connector of ICC unit, and check terminals for bend and looseness. Securely connect it again.
쐌
Enter self-diagnosis mode?
Yes or No
Yes
䊳
Inspection is completed.
No
䊳
GO TO 5.
5
CHECK POWER SUPPLY FOR ICC UNIT
쐌
Check ICC unit power supply, and repair if necessary.
쐌
When ignition switch is ON, do all displays illuminate?
Yes or No
Yes
䊳
Perform self-diagnosis again.
No
䊳
GO TO 6.
6
CHECK CONNECTOR FOR ICC UNIT
쐌
Disconnect connector of ICC unit, and check terminals for bend and looseness. Securely connect it again.
쐌
When ignition switch is ON, do all displays illuminate?
Yes or No
Yes
䊳
Perform self-diagnosis again.
No
䊳
GO TO 7.
7
CHECK METER COMMUNICATION
쐌
Perform self-diagnosis with CONSULT-II, and check meter communication system for malfunction.
OK or NG
OK
䊳
Replace combination meter.
NG
䊳
Meter communication inspection. Refer to “DTC 48 METER CIRCUIT” EL-336.
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INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis - General Description (Cont’d)
EL-319
Trouble Diagnosis For Self-diagnostic Items
NBEL0468
DIAGNOSTIC TROUBLE CODE (DTC) CHART
NBEL0468S01
×
:Applicable
DTC No.
CONSULT-II screen terms
ICC system
warning lamp
Fail-safe
Malfunctions detected where...
Refer-
ence
page
11
CONTROL UNIT
×
×
쐌
ICC unit internal malfunction
20
CAN COMM CIRCUIT
×
×
쐌
ICC unit detected CAN commu-
nication malfunction.
31
POWER SUPPLY CIR1
×
×
쐌
ICC unit power supply voltage is
excessively low.
34
POWER SUPPLY CIR2
×
×
쐌
ICC unit power supply voltage is
excessively high.
41
VHCL SPEED SE CIRC
×
×
쐌
Vehicle speed sensor signal har-
ness is open or shorted
쐌
Combination meter malfunction
42
THRTL POS SEN CIRC
×
×
쐌
Throttle position sensor and
throttle position switch harness
is open or shorted.
쐌
Throttle position sensor input is
HI or fixed to LO.
쐌
Throttle position switch is ON or
stuck to OFF.
43
ABS/TCS/VDC CIRC
×
×
쐌
ABS system malfunction
쐌
ABS operation signal harness is
opened.
45
BRAKE SW/ STOP L SW
×
×
쐌
Brake and stop lamp switch har-
ness is open or shorted.
쐌
Brake and stop lamp switch is
ON or stuck to OFF.
쐌
Brake and stop lamp switch is
stuck to ON.
46
OPERATION SW CIRC
×
×
쐌
ICC steering switch harness or
spiral cable is open or shorted.
쐌
ICC steering switch malfunction
48
METER CIRCUIT
×
×
쐌
Combination meter communica-
tion harness is open or shorted.
쐌
Combination meter malfunction
쐌
ICC unit malfunction
61
PRESS SEN CIRCUIT
×
×
쐌
Brake pressure sensor harness
is open or shorted.
쐌
Brake pressure sensor malfunc-
tion
쐌
Brake pressure sensor input cir-
cuit malfunction
62
BOOSTER SOL/V CIRCUIT
×
×
쐌
Solenoid harness is open or
shorted.
쐌
Solenoid is open.
쐌
Solenoid drive circuit malfunc-
tion
63
RELEASE SW CIRCUIT
×
×
쐌
Release switch harness is open
or shorted.
쐌
Release switch malfunction
쐌
Release switch input circuit mal-
function
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis For Self-diagnostic Items
EL-320
DTC No.
CONSULT-II screen terms
ICC system
warning lamp
Fail-safe
Malfunctions detected where...
Refer-
ence
page
65
PRESSURE CONTROL
×
×
쐌
Booster malfunction
74
LASER BEAM OFF CNTR
×
×
Laser beam of ICC sensor is off
the aiming point.
81
POWER SUPPLY VALVE
[HI VOLTAGE]
×
×
쐌
Power supply relay to vacuum
pump, air valve, and release
valve in ICC unit is stuck closed.
쐌
Power supply wire to release
valve is shorted to power sup-
ply.
82
POWER SUPPLY VALVE
[HI VOLTAGE]
×
×
쐌
Vacuum pump drive circuit in
ICC unit.
ICC unit
malfunc-
tion
83
POWER SUPPLY VALVE
[LOW VOLTAGE]
×
×
쐌
Vacuum pump drive circuit in
ICC unit is irregular condition.
쐌
Vacuum pump control line is
shorted to ground.
84
AIR VALVE
[HI VOLTAGE]
×
×
쐌
Air valve drive circuit in ICC unit
is irregular condition.
ICC unit
malfunc-
tion
85
AIR VALVE
[LOW VOLTAGE]
×
×
쐌
Air valve drive circuit in ICC unit
is irregular condition.
쐌
Air valve control line is shorted
to ground.
86
RELEASE VALVE
[HI VOLTAGE]
×
×
쐌
Release valve drive circuit in
ICC unit is irregular condition.
ICC unit
malfunc-
tion
87
RELEASE VALVE
[LOW VOLTAGE]
×
×
쐌
Release valve drive circuit in
ICC unit is irregular condition.
쐌
Power supply relay to vacuum
pump, air valve, and release
valve in ICC unit is stuck to
OFF.
쐌
Release valve control line is
shorted.
쐌
Power supply line to vacuum
pump, air valve, and release
valve is open.
90
STOP LAMP RLY FIX
×
×
쐌
Normally open terminal of stop
lamp relay is stuck.
102
RADAR STAIN
×
×
쐌
ICC sensor body window has
contamination.
103
LASER SENSOR FAIL
×
×
쐌
ICC sensor internal malfunction
104
LASER AIMING INCMP
×
×
쐌
Laser beam aiming of ICC sen-
sor is not adjusted.
107
LASER COMM FAIL
×
×
쐌
CAN data received by ICC sen-
sor is strange (from ICC unit).
109
LASER HIGH TEMP
×
×
쐌
Temperature around ICC sensor
is excessively high.
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EC
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AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis For Self-diagnostic Items (Cont’d)
EL-321
DTC 11 CONTROL UNIT
NBEL0468S02
1
DIAGNOSTIC CHECK
1. Are any items other than “DTC 11 CONTROL UNIT” indicated on self-diagnosis display?
Yes or No
Yes
䊳
Repair or replace applicable item. Erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
No
䊳
Replace ICC unit. Erase DTC and perform ICC system running test. Then perform self-
diagnosis of ICC system again.
DTC 20 CAN COMM CIRCUIT
NBEL0468S03
1
CHECK CAN COMMUNICATION
With CONSULT-II
1. Perform self-diagnosis.
2. Print self-diagnostic result.
3. Check “CAN DIAG SUPPORT MNTR” on data monitor.
CAN DIAG SUPPORT MNTR
MTBL1226
OK or NG
OK
䊳
Disconnect ICC unit and ICC sensor connector, and connect it securely again. Then,
erase DTC. After that, perform self-diagnosis of ICC system again.
NG
䊳
CAN COMM: NG
Replace ICC unit
CAN CIRC1: UNKWN
Replace ICC unit
CAN CIRC7: UNKWN
Replace ICC unit or ICC sensor
CAN CIRC8: UNKWN
Replace ICC unit or ICC sensor
CAN CIRC10: UNKWN
Replace ICC unit or ICC sensor
CAN CIRC11: UNKWN
Replace ICC sensor
When indicated CAN COMM: NG and CAN CIRC7 to 11 UNKWN (All) GO TO 2.
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis For Self-diagnostic Items (Cont’d)
EL-322
2
CHECK HARNESS FOR OPEN CIRCUIT 1
1. Disconnect ICC sensor connector.
2. Check resistance between ICC sensor harness connector E140 terminals 3 (P/B) and 6 (LG/B).
SEL541Y
Approx. 54 - 66
Ω
OK or NG
OK
䊳
쐌
Replace ICC sensor.
쐌
After replacing ICC sensor, erase DTC, and perform ICC system running test. Then,
perform self-diagnosis of ICC system again.
NG
䊳
GO TO 3.
3
CHECK HARNESS FOR OPEN CIRCUIT 2
1. Connect ICC sensor connector.
2. Disconnect ICC unit connector.
3. Check resistance between ICC unit harness connector B158 terminals 5 (B/P) and 14 (OR).
SEL542Y
Approx. 108 - 132
Ω
OK or NG
OK
䊳
쐌
Replace ICC unit.
쐌
After replacing ICC unit, erase DTC, and perform ICC system running test. Then, per-
form self-diagnosis of ICC system again.
NG
䊳
쐌
Check ICC resistor harness and connector between ICC unit and ICC sensor.
쐌
After repair, erase DTC, and perform ICC system running test. Then, perform self-di-
agnosis of ICC system again.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis For Self-diagnostic Items (Cont’d)
EL-323
DTC 31 POWER SUPPLY CIR 1, DTC 34 POWER
SUPPLY CIR 2
NBEL0468S04
1
CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again. Then erase DTC. After that perform self-diagnosis of ICC
system again.
OK or NG
NG
䊳
GO TO 2.
OK
䊳
쐌
Poor connector connection
쐌
Check connector. (Check connector housing for disconnected, loose, bent, and col-
lapsed terminals. If any malfunction is detected, repair applicable part.) After repair,
erase DTC, and perform ICC running test. Then perform self-diagnosis of ICC system
again.
2
CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT
1. Turn ignition switch ON.
2. Check voltage between ICC unit harness connector B159 terminal 33 (W/G), 42 (W/G) and ground.
SKIA1173E
Battery voltage should exist.
OK or NG
OK
䊳
GO TO 3.
NG
䊳
쐌
Repair ICC unit power supply harness.
쐌
After repair, erase DTC and perform ICC system running test. Then, perform self-diag-
nosis of ICC system again.
INTELLIGENT CRUISE CONTROL (ICC) SYSTEM
Trouble Diagnosis For Self-diagnostic Items (Cont’d)
EL-324
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