Nissan Titan. Manual — part 190
ECM
EC-61
< ECU DIAGNOSIS INFORMATION >
[VK56DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
CLSD THL POS
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly de-
pressed
OFF
AIR COND SIG
• Engine: After warming up,
idle the engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor: Operates.)
ON
PW/ST SIGNAL
• Engine: After warming up,
idle the engine
Steering wheel: Not being turned
(Forward direction)
OFF
Steering wheel: Being turned
ON
LOAD SIGNAL
• 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
IGNITION SW
• Ignition switch: ON
→ OFF → ON
ON
→ OFF → ON
HEATER FAN SW
• Engine: After warming up,
idle the engine
Heater fan control switch: OFF
OFF
Heater fan control switch: ON
ON
BRAKE SW
• Ignition switch: ON
Brake 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 load
Idle
2.0 - 2.8 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 load
Idle
10
° - 20° BTDC
2,000 rpm
25
° - 45° BTDC
CAL/LD VALUE
• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No load
Idle
14% - 33%
2,500 rpm
12% - 25%
MASS AIRFLOW
• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No load
Idle
3.0 - 9.0 g/s
2,500 rpm
9.0 - 28.0 g/s
PURG VOL C/V
• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
• No load
Idle
(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 load
Idle
(
−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 load
Idle
0% - 2%
2,000 rpm
Approx. 25% - 50%
AIR COND RLY
• Engine: After warming up,
idle the engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor: Operates)
ON
FUEL PUMP RLY
• For 1 second after turning ignition switch ON
• Engine running or cranking
ON
• Except above conditions
OFF
MONITOR ITEM
CONDITION
SPECIFICATION
EC-62
< ECU DIAGNOSIS INFORMATION >
[VK56DE]
ECM
FPCM*
2
• 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
A/F S1 HTR (B2)
• Engine: After warming up, idle the engine
4 - 100%
HO2S2 HTR (B1)
HO2S2 HTR (B2)
• Engine speed is 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 load
ON
• Engine speed: Above 3,600 rpm
OFF
ALT DUTY SIG
• Power generation voltage variable control: Operating
ON
• Power generation voltage variable control: Not operating
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 value with the speed-
ometer indication.
Almost the same speed as the
speedometer indication
IDL A/V LEARN
• Engine: Running
Idle air volume learning has not
been performed yet.
YET
Idle air volume learning has al-
ready been performed successful-
ly.
CMPLT
TRVL AFTER MIL
• Ignition switch: ON
Vehicle has traveled after MIL has
turned ON.
0 - 65,535 km
(0 - 40,723 mile)
A/F S1 HTR (B1)
• Engine: After warming up, idle the engine
4 - 100%
VHCL SPEED SE
• Turn drive wheels and compare CONSULT value with the speed-
ometer indication.
Almost the same speed as the
speedometer indication
SET VHCL SPD
• Engine: Running
ASCD: Operating.
The preset vehicle speed is dis-
played.
MAIN SW
• Ignition switch: ON
MAIN switch: Pressed
ON
MAIN switch: Released
OFF
CANCEL SW
• Ignition switch: ON
CANCEL switch: Pressed
ON
CANCEL switch: Released
OFF
RESUME/ACC SW
• Ignition switch: ON
RESUME/ACCELERATE switch:
Pressed
ON
RESUME/ACCELERATE switch:
Released
OFF
SET SW
• Ignition switch: ON
SET/COAST switch: Pressed
ON
SET/COAST switch: Released
OFF
BRAKE SW1
• Ignition switch: ON
Brake pedal: Fully released
ON
Brake pedal: Slightly depressed
OFF
BRAKE SW2
• Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
VHCL SPD CUT
• Ignition switch: ON
NON
LO SPEED CUT
• Ignition switch: ON
NON
AT OD MONITOR
• Ignition switch: ON
OFF
AT OD CANCEL
• Ignition switch: ON
OFF
MONITOR ITEM
CONDITION
SPECIFICATION
ECM
EC-63
< ECU DIAGNOSIS INFORMATION >
[VK56DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
*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: For Flexible Fuel Vehicle
*3: Before measuring the terminal voltage, confirm the battery is fully charged.
CRUISE LAMP
• Ignition switch: ON
MAIN switch: Pressed at the 1st
time
→ at the 2nd time
ON
→ OFF
SET LAMP
• MAIN switch: ON
• Vehicle speed: Between 40
km/h (25 MPH) and 144 km/h
(89 MPH)
ASCD: Operating
ON
ASCD: Not operating
OFF
ETHANOL M/R*
2
• Ignition switch: ON
0 - 85%
ALT DUTY
• Engine: Idle
0 - 80%
BAT CUR SEN
• Engine speed: Idle
• Battery: Fully charged*
3
• Selector lever: P or N
• Air conditioner switch: OFF
• No load
Approx. 2,600 - 3,500mV
A/F ADJ-B1
• Engine: Running
(–0.330) - (+0.330)
A/F ADJ-B2
• Engine: Running
(–0.330) - (+0.330)
P/N POSI SW
• Ignition switch: ON
Shift lever: P or N
ON
Shift lever: Except above
OFF
INT/A TEMP SE
• Ignition switch: ON
Indicates intake air tempera-
ture.
AC PRESS SEN
• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor oper-
ates.)
1.0 - 4.0V
A/F SEN1 (B2)
• Engine: After warming up
Maintaining engine speed at 2,000
rpm
Fluctuates around 2.2 V
VTC DTY EX B2
—
—
FPCM DR VOLT
• Not used.
—
THRTL STK CNT B1
NOTE:
The item is indicated, but not used.
—
HO2 S2 DIAG2 (B1)
NOTE:
The item is indicated, but not used.
—
HO2 S2 DIAG2 (B2)
NOTE:
The item is indicated, but not used.
—
EVAP LEAK DIAG
• Ignition switch: ON
Indicates the condition of EVAP
leak diagnosis.
EVAP DIAG READY
• Ignition switch: ON
Indicates the ready condition of
EVAP leak diagnosis.
A/F SEN1 DIAG2 (B1)
NOTE:
The item is indicated, but not used.
—
A/F SEN1 DIAG2 (B2)
NOTE:
The item is indicated, but not used.
—
A/F-S ATMSPHRC CRCT B1
Engine: After warming up, idle the engine
Varies depending on vehicle
environment.
A/F-S ATMSPHRC CRCT B2
Engine: After warming up, idle the engine
Varies depending on vehicle
environment.
A/F-S ATMSPHRC CRCT UP
B1
Engine: Running
Varies depending on the num-
ber of updates.
A/F-S ATMSPHRC CRCT UP
B2
Engine: Running
Varies depending on the num-
ber of updates.
MONITOR ITEM
CONDITION
SPECIFICATION
EC-64
< ECU DIAGNOSIS INFORMATION >
[VK56DE]
ECM
ECM Harness Connector Terminal Layout
INFOID:0000000009886514
ECM Terminal and Reference Value
INFOID:0000000009886515
PREPARATION
ECM is located in the engine room passenger side behind battery.
ECM INSPECTION TABLE
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
PBIB3368E
BBIA0386E
TER-
MI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
1
B
ECM ground
[Engine is running]
• Idle speed
Body ground
2
LG/B
A/F sensor 1 heater (bank 1)
[Engine is running]
• Warm-up condition
• Idle speed
(More than 140 seconds after starting en-
gine)
Approximately 2.9 - 8.8V
3
L
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
L/W
Throttle control motor (Close)
[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D
• Accelerator pedal: Fully released
0 - 14V
PBIA8148J
PBIB1104E
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