EC-140
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ
from ECM terminals voltage signal.
*2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to SC-5, "
SPECIFIC GRAVITY CHECK" . TRVL AFTER MIL
Ignition switch: ONVehicle has traveled after MIL has turned
ON.0 - 65,535 km
(0 - 40,723 miles)
A/F S1 HTR (B1)
A/F S1 HTR (B2)
Engine: After warming up, idle the engine 0 - 100%
AC PRESS SEN
Engine: Idle
Both A/C switch and blower fan switch: ON (Compressor operates)1.0 - 4.0V
VHCL SPEED SE
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.Almost the same speed as
the speedometer indication
SET VHCL SPD
Engine: Running ASCD: OperatingThe preset vehicle speed is
displayed
MAIN SW
Ignition switch: ONMAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW
Ignition switch: ONCANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW
Ignition switch: ONRESUME/ACCELERATE switch:
PressedON
RESUME/ACCELERATE switch:
ReleasedOFF
SET SW
Ignition switch: ONSET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
BRAKE SW1
(ICC/ASCD brake
switch)
Ignition switch: ONBrake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(Stop lamp switch)
Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DIST SW
Ignition switch: ONDISTANCE switch: Pressed ON
DISTANCE switch: Released OFF
CRUISE LAMP
Ignition switch: ONMAIN switch: Pressed at the 1st time →
at the 2nd timeON → OFF
SET LAMP
MAIN switch: ON
When vehicle speed: Between 40
km/h (25 MPH) and 144 km/h (89
MPH)ASCD: Operating ON
ASCD: Not operating OFF
FA N DU T Y
Engine: Running 0 - 100%
AC EVA TEMP
Engine: Idle
Both A/C switch and blower fan switch: ON (Compressor operates)
AC EVA TARGET
Engine: Idle
Both A/C switch and blower fan switch: ON (Compressor operates)
ALT DUTY
Engine: Idle 0 - 80%
BAT CUR SEN
Engine speed: Idle
Battery: Fully charged*2
Selector lever: P or N
Air conditioner switch: OFF
No loadApprox. 2,600 - 3,500mV
ALT DUTY SIG
Power generation voltage variable control: Operating ON
Power generation voltage variable control: Not operating OFF MONITOR ITEM CONDITION SPECIFICATION
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-149
[VQ35DE]
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EC
Revision: 2007 April2007 M35/M45
16. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG >> Detect malfunctioning part according to EC-99, "
Symptom Matrix Chart" .
17. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18. DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
–Engine oil level is too high
–Engine oil viscosity
–Belt tension of power steering, alternator, A/C compressor, etc. is excessive
–Noise from engine
–Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
–Valve clearance malfunction
–Intake valve timing control function malfunction
–Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E
TROUBLE DIAGNOSIS
EC-841
[VK45DE]
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Revision: 2007 April2007 M35/M45
CONSULT-II Reference Value in Data MonitorNBS005AP
Remarks:
Specification data are reference values.
Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED
Run engine and compare CONSULT-II value with the tachometer indication.Almost the same speed as
the tachometer indication.
MAS A/F SE-B1 See EC-847, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
B/FUEL SCHDL See EC-847, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
A/F ALPHA-B1
A/F ALPHA-B2See EC-847, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
COOLAN TEMP/S
Engine: After warming up More than 70°C (158°F)
A/F SEN1 (B1)
A/F SEN1 (B2)
Engine: After warming up Maintaining engine speed at 2,000 rpm Fluctuates around 1.5 V
HO2S2 (B1)
HO2S2 (B2)
Revving engine from idle to 3,000 rpm quickly after the following conditions
are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load0 - 0.3V ←→ Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
HO2S2 MNTR (B2)LEAN ←→ RICH
VHCL SPEED SE
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.Almost the same speed as
speedometer indication
BATTERY VOLT
Ignition switch: ON (Engine stopped) 11 - 14V
ACCEL SEN 1
ACCEL SEN 2*
1Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.4 - 1.1V
Accelerator pedal: Fully depressed 3.7 - 4.8V
THRTL SEN 1
THRTL SEN 2*
1
Ignition switch: ON
(Engine stopped)
Selector lever: DAccelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
EVAP SYS PRES
Ignition switch: ON Approx. 1.8 - 4.8V
START SIGNAL
Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW
Ignition switch: ONSelector lever: P or N ON
Selector lever: Except above OFF
PW/ST SIGNAL
Engine: After warming up, idle
the engineSteering wheel: Not being turned
(Forward direction)OFF
Steering wheel: Being turned ON
LOAD SIGNAL
Ignition switch: ONRear window defogger switch: ON
and/or
Lighting switch: 2ND positionON
Rear window defogger switch and light-
ing switch: OFFOFF
IGNITION SW
Ignition switch: ON → OFF → ON ON → OFF → ON
HEATER FAN SW
Engine: After warming up, idle
the engineHeater fan switch: ON ON
Heater fan switch: OFF OFF
EC-842
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
BRAKE SWIgnition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
INJ PULSE-B1
INJ PULSE-B2
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle 7° - 17° BTDC
2,000 rpm 25° - 45° BTDC
CAL/LD VALUE
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle 14% - 33%
2,500 rpm 12% - 25%
MASS AIRFLOW
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle 2.0 - 6.0 g·m/s
2,500 rpm 7.0 - 20.0 g·m/s
PURG VOL C/V
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle
(Accelerator pedal: Not depressed even
slightly, after engine starting.)0%
2,000 rpm —
INT/V TIM (B1)
INT/V TIM (B2)
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 20°CA
INT/V SOL (B1)
INT/V SOL (B2)
Engine: After warming up
Selector lever: P or N
Air conditioner switch: OFF
No loadIdle 0% - 2%
2,000 rpm Approx. 25% - 50%
VIAS S/V
Selector lever: P or N
ON
Engine speed: More than 5,000 rpm
Selector lever: Except P or N
Engine speed: Less than 5,000 rpmOFF
AIR COND RLY
Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates)ON
FUEL PUMP RLY
For 1 seconds after turning ignition switch: ON
Engine running or crankingON
Except above OFF
FPCM
Engine: Cranking HI
Engine: Idle
Engine coolant temperature: More than 10°C (50°F)LOW
VENT CONT/V
Ignition switch: ON OFF
THRTL RELAY
Ignition switch: ON ON MONITOR ITEM CONDITION SPECIFICATION
TROUBLE DIAGNOSIS
EC-843
[VK45DE]
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EC
Revision: 2007 April2007 M35/M45
HO2S2 HTR (B1)
HO2S2 HTR (B2)
Engine speed: Below 3,600 rpm after the following conditions are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no loadON
Engine speed: Above 3,600 rpm OFF
I/P PULLY SPD
Vehicle speed: More than 20 km/h (12 MPH)Almost the same speed as
the tachometer indication
VEHICLE SPEED
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.Almost the same speed as
the speedometer indication
TRVL AFTER MIL
Ignition switch: ONVehicle has traveled after MIL has turned
ON.0 - 65,535 km
(0 - 40,723 miles)
A/F S1 HTR (B1)
A/F S1 HTR (B2)
Engine: After warming up, idle the engine 0 - 100%
AC PRESS SEN
Engine: Idle
Both A/C switch and blower fan switch: ON (Compressor operates)1.0 - 4.0V
VHCL SPEED SE
Turn drive wheels and compare CONSULT-II value with the speedometer
indication.Almost the same speed as
the speedometer indication
SET VHCL SPD
Engine: Running ASCD: OperatingThe preset vehicle speed is
displayed
MAIN SW
Ignition switch: ONMAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW
Ignition switch: ONCANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW
Ignition switch: ONRESUME/ACCELERATE switch:
PressedON
RESUME/ACCELERATE switch:
ReleasedOFF
SET SW
Ignition switch: ONSET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
BRAKE SW1
(ICC/ASCD brake
switch)
Ignition switch: ONBrake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(Stop lamp switch)
Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DIST SW
Ignition switch: ONDISTANCE switch: Pressed ON
DISTANCE switch: Released OFF
CRUISE LAMP
Ignition switch: ONMAIN switch: Pressed at the 1st time →
at the 2nd timeON → OFF
SET LAMP
MAIN switch: ON
When vehicle speed is between
40 km/h (25 MPH) and 144 km/h
(89 MPH)ASCD: Operating ON
ASCD: Not operating OFF
FAN DUTY
Engine: Running 0 - 100%
ALT DUTY
Engine: Idle 0 - 80%
BAT CUR SEN
Engine speed: Idle
Battery: Fully charged*2
Selector lever: P or N
Air conditioner switch: OFF
No loadApprox. 2,600 - 3,500mV MONITOR ITEM CONDITION SPECIFICATION
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-853
[VK45DE]
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Revision: 2007 April2007 M35/M45
16. CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Start engine.
2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “DATA MONITOR (SPEC)” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG >> Detect malfunctioning part according to EC-801, "
Symptom Matrix Chart" .
17. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18. DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
–Engine oil level is too high
–Engine oil viscosity
–Belt tension of power steering, alternator, A/C compressor, etc. is excessive
–Noise from engine
–Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
–Valve clearance malfunction
–Intake valve timing control function malfunction
–Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
Crushed air ducts
Malfunctioning seal of air cleaner element
Uneven dirt of air cleaner element
Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E
EC-1426
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2007 April2007 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS005Q9
1. CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check voltage between ECM terminal 70 and ground with CON-
SULT-II or tester.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK GROUND CONNECTIONS
1. Turn A/C switch and blower fan switch OFF.
2. Turn ignition switch OFF.
3. Loosen and retighten ground screws on the body.
Refer to EC-864, "
Ground Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
49 B/YSensor power supply
(Refrigerant pressure sen-
sor)[Ignition switch: ON]Approximately 5V
67 B/WSensor ground
(Refrigerant pressure sen-
sor)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
70 L/R Refrigerant pressure sensor[Engine is running]
Warm-up condition
Both A/C switch and blower fan motor
switch: ON (Compressor operates)1.0 - 4.0V
Voltage: 1.0 - 4.0V
PBIB1188E
1. Body ground M70 2. Body ground M16
PBIB2782E
IDX-2
ALPHABETICAL INDEX
Symbols
(VK45DE) .............................................................. GI-6
(VQ35DE) ............................................................. GI-6
A
A/C air flow ...................................................... ATC-37
A/C component layout ..................................... ATC-25
A/C compressor mounting ........... ATC-153, ATC-157,
ATC-158
, ATC-159, ATC-161, ATC-163, ATC-164,
ATC-166
, ATC-167, ATC-168
A/C compressor precaution ............................. ATC-12
A/C compressor special service tool ................ ATC-16
A/C control operation (auto A/C) ...................... ATC-33
A/C diagnostic work flow (auto A/C) .............. ATC-110
A/C evaporator ............................................... ATC-167
A/C HFC134a (R134a) system precaution ........ ATC-6
A/C HFC134a (R134a) system service procedure .......
ATC-150
A/C HFC134a (R134a) system service tools ... ATC-17
A/C HFC134a system service equipment precaution ...
ATC-13
A/C lubricant (R134a) ...................................... ATC-26
A/C lubrication oil ........................................... ATC-173
A/C operational check ...................................... ATC-65
A/C self-diagnoses (auto A/C) ........ ATC-56, ATC-110
A/C service data specification ........................ ATC-173
A/C system description (auto A/C) ................... ATC-29
A/C trouble diagnoses (auto A/C) .................... ATC-40
A/C, A - Wiring diagram ................................... ATC-46
A/T fluid checking ...................... AT-13, AT-53, MA-29
A/T fluid cooler cleaning .................................... AT-14
A/T fluid replacement ............................. AT-12, MA-31
A/T fluid temperature sensor ........................... AT-135
A/T IND - Wiring diagram .................................... DI-56
A/T self-diagnoses ............................... AT-92, AT-103
A/T shift lock system ........................................ AT-229
A/T shift lock system - Wiring diagram ............ AT-230
A/T trouble diagnoses ........................................ AT-44
Accelerator control system ............................... ACC-3
Accelerator pedal position (APP) sensor ........ EC-617,
EC-624
, EC-638, EC-1336, EC-1343, EC-1357
Accelerator pedal released position learning .... EC-86,
EC-788
AF1B1-Wiring diagram ...... EC-237, EC-246, EC-255,
EC-265
, EC-648, EC-950, EC-959, EC-968, EC-978,
EC-1367
AF1B2-Wiring diagram ...... EC-239, EC-248, EC-257,
EC-267
, EC-650, EC-952, EC-961, EC-970, EC-980,
EC-1369
AF1HB1-Wiring diagram .................... EC-171, EC-884
AF1HB2-Wiring diagram .................... EC-173, EC-886
Air bag .............................................................. SRS-3
Air bag precautions ........................................... SRS-3
Air cleaner and air duct(VK45DE) ................... EM-177
Air cleaner and air duct(VQ35DE) .................... EM-19
Air cleaner filter replacement ............................ MA-25
Air cleaner filter replacement(VQ35DE) ........... MA-18
Air cleaner filter(VQ35DE) ................................ EM-20
Air conditioner cut control ................... EC-35, EC-737
Air flow meter - See Mass air flow sensor ....... EC-193,
EC-202
, EC-906, EC-915
Air fuel ratio sensor 1 ......... EC-234, EC-244, EC-253,
EC-262
, EC-646, EC-947, EC-957, EC-966, EC-975,
EC-1365
Air fuel ratio sensor 1 heater ............. EC-170, EC-883
Air mix. door motor ......................... ATC-82, ATC-140
Ambient sensor ............................. ATC-112, ATC-125
Angular tightening application ............................. EM-7
Angular tightening application(VK45DE) ........ EM-165
APPS1 - Wiring diagram ................. EC-619, EC-1338
APPS2 - Wiring diagram ................. EC-626, EC-1345
APPS3 - Wiring diagram ................. EC-640, EC-1359
ASC/BS - Wiring diagram ............... EC-578, EC-1291
ASC/SW - Wiring diagram .............. EC-561, EC-1274
ASCBOF - Wiring diagram .............. EC-658, EC-1378
ASCD .................................................. EC-36, EC-738
ASCD (automatic speed control device) ........... ACS-3
ASCIND - Wiring diagram ............... EC-665, EC-1385
AT indicator lamp ................................................ DI-55
Auto air conditioner - Wiring diagram ............. ATC-46
Auto amp ...................................................... ATC-124
Auto anti-dazzling inside mirror .......... GW-69, GW-70
Automatic amplifier ........... ATC-54, ATC-67, ATC-124
Automatic transmission fluid replacement ........ MA-32
AWD - Wiring diagram ....................................... TF-17
Axle ................................................................... MA-37
B
Back-up lamp ................................................... LT-245
Basic inspection .................................. EC-78, EC-780
Battery ................................................................. SC-4
Battery current sensor ....... EC-524, EC-531, EC-538,
EC-545
, EC-1237, EC-1244, EC-1251, EC-1258
Battery/Starting/Charging System Tester SC-7, SC-11,
SC-25
BCM (Body control module) .............................. BCS-3
Block heater(VK45DE) .................................... EM-252
Block heater(VQ35DE) ................................... EM-124
Blower motor ................................... ATC-88, ATC-131
Blower unit .................................................... ATC-129
Brake fluid level ................................................ MA-35
Brake hydraulic line ........................................... BR-11
Brake inspection ............................................... MA-36
Brake lines and cables inspection .................... MA-35
Brake pedal .......................................................... BR-6
Brake switch ................................... EC-589, EC-1307
BRK/SW - Wiring diagram .............. EC-591, EC-1309
Bulb specifications ........................................... LT-313
Bumper, front ...................................................... EI-11
Bumper, rear ....................................................... EI-14
C
Camshaft inspection(VK45DE) ....................... EM-217
Camshaft inspection(VQ35DE) ......................... EM-87