Infiniti I30. Emission Control System (2003 year). Manual — part 9
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
Engine
Cylinder head
5
5
5
5
5
5
5
5
EM section
Cylinder head gasket
4
3
Cylinder block
6
6
6
6
6
6
6
6
4
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mechanism
Timing chain
5
5
5
5
5
5
5
5
Camshaft
Intake valve timing control
Intake valve
3
Exhaust valve
Exhaust
Exhaust manifold/Tube/Muffler/
Gasket
5
5
5
5
5
5
5
5
FE section
Three way catalyst
Lubrication
Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
5
5
5
5
5
5
5
5
MA, EM, LC
section
Oil level (Low)/Filthy oil
LC section
Cooling
Radiator/Hose/Radiator filler cap
5
5
5
5
5
5
5
4
5
Thermostat
5
Water pump
Water gallery
Cooling fan
5
Coolant level (low)/Contaminated
coolant
MA section
1 - 6: The numbers refer to the order of inspection.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-129
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
IVIS (INFINITI Vehicle Immobilizer System —
NATS)
1
1
EC-90 or EL
section
1 - 6: The numbers refer to the order of inspection.
CONSULT-II Reference Value in Data Monitor
Mode
NHEC1426
Remarks:
쐌
Specification data are reference values.
쐌
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
쐌
Run engine and compare CONSULT-II value with the tachometer indi-
cation.
Almost the same speed as
the tachometer indication.
MAS A/F SE-B1
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
1.1 - 1.5V
2,500 rpm
1.7 - 2.4V
COOLAN TEMP/S
쐌
Engine: After warming up
More than 70°C (158°F)
HO2S1 (B1)
HO2S1 (B2)
쐌
Engine: After warming up
Maintaining engine speed at 2,000
rpm
0 - 0.3V
+,
Approx. 0.6 -
1.0V
HO2S1 MNTR (B1)
HO2S1 MNTR (B2)
LEAN
+,
RICH
Changes more than 5 times
during 10 seconds.
HO2S2 (B1)
HO2S2 (B2)
쐌
Warm-up condition
쐌
After keeping engine speed
between 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load
Revving engine from idle up to 3,000
rpm quickly
0 - 0.3V
+,
Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
HO2S2 MNTR (B2)
LEAN
+,
RICH
VHCL SPEED SE
쐌
Turn drive wheels and compare CONSULT-II value with the speedom-
eter indication
Almost the same speed as
the speedometer indication
BATTERY VOLT
쐌
Ignition switch: ON (Engine stopped)
11 - 14V
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-130
MONITOR ITEM
CONDITION
SPECIFICATION
ACCEL SEN 1
쐌
Ignition switch: ON
(Engine stopped)
쐌
Shift lever: “D”
Accelerator pedal: Released
0.41 - 0.71V
Accelerator pedal: Fully depressed
More than 3.7V
ACCEL SEN 2*
쐌
Ignition switch: ON
(Engine stopped)
쐌
Shift lever: “D”
Accelerator pedal: Released
0.15 - 0.97V
Accelerator pedal: Fully depressed
More than 3.5V
THRTL SEN 1
THRTL SEN 2*
쐌
Ignition switch: ON
(Engine stopped)
쐌
Shift lever: “D”
Accelerator pedal: Released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
START SIGNAL
쐌
Ignition switch: ON
,
START
,
ON
OFF
,
ON
,
OFF
CLSD THL POS
쐌
Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
쐌
Engine: After warming up, idle
the engine
Air conditioner switch: “OFF”
OFF
Air conditioner switch: “ON”
(Compressor operates.)
ON
P/N POSI SW
쐌
Ignition switch: ON
Shift lever: “P” or “N”
ON
Except above
OFF
PW/ST SIGNAL
쐌
Engine: After warming up, idle
the engine
Steering wheel in neutral position
(forward direction)
OFF
The steering wheel is turned
ON
IGNITION SW
쐌
Ignition switch: ON
,
OFF
,
ON
ON
,
OFF
,
ON
INJ PULSE-B1
INJ PULSE-B2
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
B/FUEL SCHDL
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
2.3 - 2.9 msec
2,000 rpm
2.3 - 2.9 msec
IGN TIMING
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
13 - 18° BTDC
2,000 rpm
25 - 45° BTDC
LOAD SIGNAL
쐌
Ignition switch: ON
Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF.
OFF
PURG VOL C/V
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
0 %
2,000 rpm
—
A/F ALPHA-B1
A/F ALPHA-B2
쐌
Engine: After warming up
Maintaining engine speed at 2,000
rpm
54 - 155%
EVAP SYS PRES
쐌
Ignition switch: ON
Approx. 3.4V
AIR COND RLY
쐌
Air conditioner switch: OFF
,
ON
OFF
,
ON
FUEL PUMP RLY
쐌
Ignition switch is turned to ON (Operates for 1 seconds)
쐌
Engine running or cranking
ON
Except as shown above
OFF
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-131
MONITOR ITEM
CONDITION
SPECIFICATION
VENT CONT/V
쐌
Ignition switch: ON
OFF
HO2S1 HTR (B1)
HO2S1 HTR (B2)
쐌
Engine: After warming up
쐌
Engine speed: Below 3,600 rpm
ON
쐌
Engine speed: Above 3,600 rpm
OFF
HO2S2 HTR (B1)
HO2S2 HTR (B2)
쐌
Ignition switch: ON (Engine stopped)
쐌
Engine speed: Above 3,600 rpm
OFF
쐌
Engine speed: Below 3,600 rpm after the following conditions are met.
쐌
After warming up
쐌
After keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load
ON
VC/V BYPASS/V
Ignition switch: ON
OFF
CAL/LD VALUE
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
10 - 35%
2,500 rpm
10 - 35%
BRAKE SW
쐌
Ignition switch: ON
Brake pedal: Released
OFF
Brake pedal: Slightly depressed
ON
MASS AIRFLOW
쐌
Engine: After warming up
쐌
Air conditioner switch: “OFF”
쐌
Shift lever: “N”
쐌
No-load
Idle
2.0 - 6.0 g·m/s
2,500 rpm
7.0 - 20.0 g·m/s
ABSOL PRES/SE
쐌
Ignition switch: ON
Approx. 4.4V
VIAS S/V
쐌
Engine: After warming up
1,800 - 3,600 rpm
ON
Except above conditions
OFF
TRVL AFTER MIL
Ignition switch: ON
Vehicle has traveled after MIL has
turned ON.
0 - 65,535 km
(0 - 40,723 mile)
AC PRESS SEN
쐌
Ignition switch: ON (Engine stopped)
Approx. 0V
쐌
Engine: Idle
쐌
Air conditioner switch: OFF
1.0 - 4.0V
INT/V TIM (B1)
INT/V TIM (B2)
쐌
Engine: After warming up
쐌
Shift lever “N”
쐌
Quickly depressed accelerator
pedal
쐌
No-load
Idle
−5 - 5° CA
2,000 rpm
Approximately 0 - 30° CA
INT/V SOL (B1)
INT/V SOL (B2)
쐌
Engine: After warming up
쐌
Shift lever “N”
쐌
Quickly depressed accelerator
pedal
쐌
No-load
Idle
0 - 2%
2,000 rpm
Approximately 25 - 50%
ENGINE MOUNT
쐌
Engine: Running
Idle
“IDLE”
2,000 rpm
“TRVL”
COOLING FAN
쐌
After warming up engine, idle
the engine.
쐌
After conditioner switch: “OFF”
Engine coolant temperature is 94°C
(201°F) or less.
OFF
Engine coolant temperature is
between 95°C (203°F) and 99°C
(210°F).
LOW
Engine coolant temperature is 100°C
(212°F) or more.
HIGH
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-132
MONITOR ITEM
CONDITION
SPECIFICATION
VHCL SPEED SE
Turn drive wheels and compare speedometer indication with the CON-
SULT-II value.
Almost the same speed as
the CONSULT-II value
SET VHCL SPD
쐌
ASCD set condition.
The preset vehicle speed is
displayed.
MAIN SW
쐌
Ignition switch: ON
쐌
ON/OFF (MAIN) switch: Pressed
ON
쐌
ON/OFF (MAIN) switch: Released
OFF
CANCEL SW
쐌
Ignition switch: ON
쐌
CANCEL switch: Pressed
ON
쐌
CANCEL switch: Released
OFF
RESUME/ACC SW
쐌
Ignition switch: ON
쐌
ACCEL/RESUME switch: Pressed
ON
쐌
ACCEL/RESUME switch:
Released
OFF
SET SW
쐌
Ignition switch: ON
쐌
COAST/SET switch: Pressed
ON
쐌
COAST/SET switch: Released
OFF
BRAKE SW 1
쐌
Ignition switch: ON
쐌
Shift lever: Except “N” and “P”
position
쐌
Brake pedal: Released
ON
쐌
Brake pedal: Depressed
OFF
BRAKE SW 2
쐌
Ignition switch: ON
쐌
Brake pedal: Released
OFF
쐌
Brake pedal: Depressed
ON
CRUISE LAMP
쐌
Ignition switch: ON
쐌
ON/OFF (MAIN) switch: Pressed
at the 1st time
,
at the 2nd time
ON
,
OFF
SET LAMP
쐌
Ignition switch: ON
쐌
When vehicle speed is between
40 km/h (25 MPH) and 144 km/h
(89 MPH)
쐌
SET lamp is indicated.
ON
쐌
SET lamp is not indicated.
OFF
*: 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.
Major Sensor Reference Graph in Data Monitor
Mode
NHEC1427
The following are the major sensor reference graphs in “DATA MONITOR” mode.
CLSD THL POS, ACCEL SEN1, THRTL SEN1
NHEC1427S01
Below is the data for “CLSD THL POS”, “ACCEL SEN1” and “THRTL SEN1” when depressing the accelera-
tor pedal with the ignition switch “ON” and with selector lever in “D” position.
The signal of “ACCEL SEN1” and “THRTL SEN1” should rise gradually without any intermittent drop or rise
after “CLSD THL POS” is changed from “ON” to “OFF”.
SEC041D
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-133
ENG SPEED, MAS A/F SE-B1, THRTL POS SEN, HO2S2 (B1), HO2S1 (B1), INJ PULSE-B1
NHEC1427S02
Below is the data for “ENG SPEED”, “MAS A/F SE-B1”, “THRTL POS SEN”, “HO2S2 (B1)”, “HO2S1 (B1)” and
“INJ PULSE-B1” when revving engine quickly up to 4,800 rpm under no load after warming up engine suffi-
ciently.
Each value is for reference, the exact value may vary.
SEF241Y
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Major Sensor Reference Graph in Data Monitor Mode (Cont’d)
EC-134
PBIB0668E
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Major Sensor Reference Graph in Data Monitor Mode (Cont’d)
EC-135
SEC042D
ECM Terminals and Reference Value
NHEC0044
PREPARATION
NHEC0044S01
1.
ECM is located behind the instrument lower cover. For this
inspection, remove instrument lower cover.
2.
Remove ECM harness protector.
MEC486B
3.
Perform all voltage measurements with the connector con-
nected. Extend tester probe as shown to perform tests easily.
쐌
Open harness securing clip to make testing easier.
쐌
Use extreme care not to touch 2 pins at one time.
쐌
Data is for comparison and may not be exact.
ECM HARNESS CONNECTOR TERMINAL LAYOUT
NHEC0044S02
SEF970W
ECM INSPECTION TABLE
NHEC0044S03
Specification data are reference values and are measured between
each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring the input/
output voltage. Doing so may result in damage to the ECM’s
transistor. Use ground other than the ECM terminals, such as
the ground.
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value
EC-136
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
1
2
3
11
12
13
R/B
R/W
R/Y
R/L
L/W
PU/R
Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
Injector No. 5
Injector No. 6
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
NOTE:
The pulse cycle changes depending on rpm at idle.
BATTERY VOLTAGE
(11 - 14V)
★
SEC984C
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is 2,000 rpm.
BATTERY VOLTAGE
(11 - 14V)
★
SEC985C
4
W
Electronic controlled
engine mount-1
[Engine is running]
쐌
Idle speed
0 - 1V
[Engine is running]
쐌
Except the above
BATTERY VOLTAGE
(11 - 14V)
5
6
7
15
16
17
Y/R
G/R
L/R
GY
PU/W
GY/R
Ignition signal No. 1
Ignition signal No. 2
Ignition signal No. 3
Ignition signal No. 4
Ignition signal No. 5
Ignition signal No. 6
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
NOTE:
The pulse cycle changes depending on rpm at idle.
0 - 0.2V
★
SEC986C
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is 2,500 rpm.
0.1 - 0.3V
★
SEC987C
8
G
Intake valve timing
control solenoid valve
(bank 2)
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is 2,500 rpm.
7 - 12V
★
PBIB1790E
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-137
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
9
L/W
Intake valve timing
control solenoid valve
(bank 1)
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is 2,500 rpm.
7 - 12V
★
PBIB1790E
10
PU/R
EVAP canister purge
volume control sole-
noid valve
[Engine is running]
쐌
Idle speed
BATTERY VOLTAGE
(11 - 14V)
★
SEC990C
[Engine is running]
쐌
Engine speed is 2,000 rpm (More than 100 sec-
onds after starting engine).
BATTERY VOLTAGE
(11 - 14V)
★
SEC991C
14
W/R
Electronic controlled
engine mount-2
[Engine is running]
쐌
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
쐌
Except the above
0 - 1V
18
PU/W
Engine coolant tem-
perature sensor sig-
nal output
[Engine is running]
쐌
Idle speed
0 - 12V
Output voltage varies with engine
coolant temperature.
21
B/R
Air conditioner relay
[Engine is running]
쐌
Both A/C switch and blower switch are “ON”
(Compressor is operating).
0 - 1.0V
[Engine is running]
쐌
A/C switch is “OFF”.
BATTERY VOLTAGE
(11 - 14V)
23
B/P
Fuel pump relay
[Ignition switch “ON”]
쐌
For 1 second after turning ignition switch “ON”
[Engine is running]
0 - 1.5V
[Ignition switch “ON”]
쐌
More than 1 second after turning ignition switch
“ON”
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-138
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
24
Y
ASCD CRUISE lamp
[Ignition switch “ON”]
쐌
CRUISE switch is “ON”.
0V
[Ignition switch “ON”]
쐌
CRUISE switch is “OFF”.
BATTERY VOLTAGE
(11 - 14V)
25
R
ASCD SET lamp
[Engine is running]
쐌
SET switch is “ON”.
쐌
ASCD control is operating.
0V
[Engine is running]
쐌
SET or CRUISE switch is “OFF”.
쐌
ASCD control is not operating.
BATTERY VOLTAGE
(11 - 14V)
26
OR
Throttle control motor
relay
[Ignition switch “OFF”]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
0 - 1.0V
27
Y/G
VIAS control solenoid
valve
[Engine is running]
쐌
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
쐌
Engine speed is between 1,800 and 3,600 rpm.
0 - 1.0V
28
OR/G
Vacuum cut valve
bypass valve
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
30
PU
A/C cut signal
[Engine is running]
쐌
Air conditioner is operating.
0 - 0.5V
31
R
Counter current
return
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
33
LG/B
MIL
[Ignition switch “ON”]
0 - 1.0V
[Engine is running]
쐌
Idle speed
BATTERY VOLTAGE
(11 - 14V)
34
W/G
Tachometer
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
NOTE:
The pulse cycle changes depending on rpm at idle.
7 - 8V
★
SEC992C
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is 2,500 rpm.
7 - 8V
★
SEC032D
35
BR/R
Cooling fan relay
(LOW)
[Engine is running]
쐌
Cooling fan is operating.
0 - 1.0V
[Engine is running]
쐌
Cooling fan is not operating.
BATTERY VOLTAGE
(11 - 14V)
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-139
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
36
LG
Cooling fan relay
(HIGH)
[Engine is running]
쐌
Cooling fan is operating at high speed.
0 - 1.0V
[Engine is running]
쐌
Cooling fan is not operating.
BATTERY VOLTAGE
(11 - 14V)
38
W/B
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch “ON”]
쐌
For a few seconds after turning ignition switch
“OFF”
0 - 1.5V
[Ignition switch “ON”]
쐌
A few seconds after turning ignition switch “OFF”
BATTERY VOLTAGE
(11 - 14V)
39
OR/L
Heated oxygen sen-
sor 1 heater (bank 1)
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is below 3,600 rpm.
Approximately 7V
★
PBIB0519E
[Engine is running]
쐌
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
40
R/L
Heated oxygen sen-
sor 1 heater (bank 2)
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is below 3,600 rpm.
Approximately 7V
★
PBIB0519E
[Engine is running]
쐌
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
41
P/B
Heated oxygen sen-
sor 2 heater (bank 1)
[Engine is running]
쐌
Engine speed is below 3,600 rpm after the fol-
lowing conditions are met.
–
Engine: after warming up
–
Keeping engine speed between 3,500 and
4,000 rpm for 1 minute and at idle for 1 minute
under no load
0 - 0.5V
[Ignition switch “ON”]
쐌
Engine stopped
[Engine is running]
쐌
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
42
BR/W
Start signal
[Ignition switch “ON”]
Approximately 0V
[Ignition switch “START”]
9 - 12V
43
R
Ignition switch
[Ignition switch “OFF”]
0V
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-140
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
44
G/OR
PNP switch
[Ignition switch “ON”]
쐌
General position is “P” or “N”.
Approximately 0V
[Ignition switch “ON”]
쐌
Except the above gear position
BATTERY VOLTAGE
(11 - 14V)
45
G/B
Air conditioner switch
signal
[Engine is running]
쐌
Both A/C switch and blower switch are “ON”.
Approximately 0V
[Engine is running]
쐌
A/C switch is “OFF”.
BATTERY VOLTAGE
(11 - 14V)
47
R/L
Heated oxygen sen-
sor 2 heater (bank 2)
[Engine is running]
쐌
Engine speed is below 3,600 rpm after the fol-
lowing conditions are met.
–
Engine: after warming up
–
Keeping engine speed between 3,500 and
4,000 rpm for 1 minute and at idle for 1 minute
under no load
0 - 0.5V
[Ignition switch “ON”]
쐌
Engine stopped
[Engine is running]
쐌
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
48
B
ECM ground
[Engine is running]
쐌
Idle speed
Engine ground
50
G/Y
ASCD steering
switch
[Ignition switch “ON”]
쐌
ASCD steering switch: “OFF”
Approximately 4.0V
[Ignition switch “ON”]
쐌
ON/OFF (MAIN) switch: Pressed
Approximately 0V
[Ignition switch “ON”]
쐌
CANCEL switch: Pressed
Approximately 1.0V
[Ignition switch “ON”]
쐌
ACCEL/RESUME switch: Pressed
Approximately 3.0V
[Ignition switch “ON”]
쐌
COAST/SET switch: Pressed
Approximately 2.0V
51
W/G
Electrical load signal
[Engine is running]
쐌
Rear window defogger: ON
쐌
Hi-beam headlamp: ON
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
쐌
Electrical load: OFF
0V
55
R/G
Stop lamp switch
[Ignition switch “ON”]
Brake pedal is depressed.
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
Brake pedal is released.
Approximately 0V
57
B
ECM ground
[Engine is running]
쐌
Idle speed
Engine ground
58
B
Sensors’ ground
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
Approximately 0V
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-141
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
59
G/B
ASCD brake switch
[Ignition switch “ON”]
쐌
Brake pedal is depressed.
0V
[Ignition switch “ON”]
쐌
Brake pedal is released.
BATTERY VOLTAGE
(11 - 14V)
60
W
EVAP control system
pressure sensor
[Ignition switch “ON”]
Approximately 3.4V
62
W
Mass air flow sensor
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
1.1 - 1.5V
[Engine is running]
쐌
Warm-up condition
쐌
Engine speed is 2,500 rpm.
1.7 - 2.4V
64
OR
Accelerator pedal
position sensor 2
power supply
[Ignition switch “ON”]
Approximately 2.5V
65
Y
Camshaft position
sensor (PHASE)
(bank 1)
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
NOTE:
The pulse cycle changes depending on rpm at idle.
1.0 - 4.0V
★
SEC033D
[Engine is running]
쐌
Engine speed is 2,000 rpm.
1.0 - 4.0V
★
SEC034D
66
Y/G
Mass air flow sensor
(Intake air tempera-
ture sensor)
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
67
W/L
Power supply for
ECM (Back-up)
[Ignition switch “OFF”]
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-142
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
68
P/L
Vehicle speed sensor
[Engine is running]
쐌
Jack-up front wheels
쐌
In 1st gear position
쐌
10 km/h (6 MPH)
Approximately 2.5V
★
SEC039D
[Engine is running]
쐌
Jack-up front wheels
쐌
In 2nd gear position
쐌
30 km/h (19 MPH)
Approximately 2.5V
★
SEC040D
69
G
Fuel level sensor
[Ignition switch “ON”]
Approximately 0 - 4.8V
Output voltage varies with fuel
level.
70
B/P
Accelerator pedal
position sensor 2
ground
[Ignition switch “ON”]
Approximately 0V
71
W
Knock sensor
[Engine is running]
쐌
Idle speed
Approximately 2.5V
72
W
Accelerator pedal
position sensor signal
output
[Engine is running]
쐌
Warm-up condition
쐌
Accelerator pedal released
Approximately 0.6V
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Accelerator pedal fully depressed
Approximately 4.0V
73
W
Accelerator pedal
position sensor 1
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Accelerator pedal released
0.41 - 0.71V
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Accelerator pedal fully depressed
More than 3.7V
74
W/B
Accelerator pedal
position sensor 2
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Accelerator pedal released
0.08 - 0.48V
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Accelerator pedal fully depressed
More than 1.8V
75
P/B
Fuel tank tempera-
ture sensor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.
78
B
Fuel level sensor
ground
[Engine is running]
쐌
Idle speed
Approximately 0V
80
B
Mass air flow sensor
ground
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
Approximately 0V
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-143
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
81
W
Refrigerant pressure
sensor
[Engine is running]
쐌
Warm-up condition
쐌
Both A/C switch and blower switch are “ON”.
(Compressor operates.)
1.0 - 4.0V
83
W
Throttle position sen-
sor 1
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Gear position is “D”
쐌
Accelerator pedal released
More than 0.36V
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Gear position is “D”
쐌
Accelerator pedal fully depressed
Less than 4.75V
84
L
Throttle position sen-
sor 2
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Gear position is “D”
쐌
Accelerator pedal released
Less than 4.75V
[Ignition switch “ON”]
쐌
Engine stopped
쐌
Gear position is “D”
쐌
Accelerator pedal fully depressed
More than 0.36V
85
R
Camshaft position
sensor (PHASE)
(bank 2)
[Engine is running]
쐌
Warm-up condition
쐌
Idle speed
NOTE:
The pulse cycle changes depending on rpm at idle.
1.0 - 4.0V
★
SEC033D
[Engine is running]
쐌
Engine speed is 2,000 rpm.
1.0 - 4.0V
★
SEC034D
88
W
Heated oxygen sen-
sor 2 (bank 1)
[Engine is running]
쐌
Warm-up condition
쐌
Revving engine from idle to 3,000 rpm quickly
after the following conditions are met.
–
After keeping engine speed between 3,500 and
4,000 rpm for 1 minute and at idle for 1 minute
under no load
0 - Approximately 1.0V
89
G
Power steering pres-
sure sensor
[Engine is running]
쐌
Steering wheel is being turned.
0.5 - 4.0V
[Engine is running]
쐌
Steering wheel is not being turned.
0.4 - 0.8V
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ECM Terminals and Reference Value (Cont’d)
EC-144
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