Content .. 364 365 366 367 ..

Infiniti F50. Manual - part 366

TROUBLE DIAGNOSIS

EC-105

L/W

Accelerator pedal position
sensor 1

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is released

More than 0.36V

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is fully depressed

Less than 4.75V

Refrigerant pressure sen-
sor

[Engine is running]

●

Warm-up condition

●

Both A/C switch and blower switch “ON”.

(Compressor operates.)

1.0 - 4.0V

Sensor ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

B/Y

Mass air flow sensor

[Engine is running]

●

Warm-up condition

●

Idle speed

1.1 - 1.5V

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,500 rpm.

1.7 - 2.4V

PU/W

Fuel tank temperature sen-
sor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.

Accelerator pedal position
sensor 2 power supply

[Ignition switch “ON”]

Approximately 2.5V

Power supply for ECM
(Back-up)

[Ignition switch “OFF”]

BATTERY VOLTAGE
(11 - 14V)

Throttle position sensor 2

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is released

Less than 4.75V

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is fully depressed

More than 0.36V

Intake air temperature sen-
sor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.

100

Accelerator pedal position
sensor 2 ground

[Ignition switch “ON”]

Approximately 0V

103

Sensor power supply

[Ignition switch “ON”]

Approximately 5V

106

R/W

Stop lamp switch

[Engine is running]

●

Brake pedal is fully released

Approximately 0V

[Engine is running]

●

Brake pedal is fully depressed

BATTERY VOLTAGE
(11 - 14V)

107

Fuel level sensor ground

[Engine is running]

●

Idle speed

Approximately 0V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

EC-106

TROUBLE DIAGNOSIS

108

B/W

Throttle position sensor 1

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is released

More than 0.36V

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is fully depressed

Less than 4.75V

109

Mass air flow sensor
ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

110

EVAP control system pres-
sure sensor

[Ignition switch “ON”]

Approximately 1.8 - 4.8V

113

R/Y

Accelerator pedal position
sensor signal output

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is released

0.4 - 0.8V

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is fully depressed

4.0 - 5.0V

114

R/L

Heated oxygen sensor 1
(bank 1)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm.

0 - Approximately 1.0V (Periodi-
cally change)

115

L/W

Heated oxygen sensor 1
(bank 2)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm.

0 - Approximately 1.0V (Periodi-
cally change)

116

G/R

Fuel pump control module
check

[Ignition switch “ON”]

●

More than a few seconds after turning igni-
tion switch ON”

Approximately 0V

[Ignition switch “ON”]

●

For a few seconds after turning ignition
switch “ON”

[Engine is running]

●

Warm-up condition

●

Idle speed

4 - 6V

117

B/R

Accelerator pedal position
sensor 2

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is released

More than 0.18V

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is fully depressed

Less than 2.37V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

TROUBLE DIAGNOSIS

EC-107

118

Power steering pressure
sensor

[Engine is running]

●

Steering wheel is being turned.

0.5 - 4.0V

[Engine is running]

●

Steering wheel is not being turned.

0.4 - 0.8V

119

R/L

Fuel level sensor

[Ignition switch “ON”]

Approximately 0 - 4.8V
Output voltage varies with fuel
level.

121

Y/B

Engine coolant temperature
sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.

122

G/R

Radiator coolant tempera-
ture sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with radia-
tor coolant temperature.

123

Heated oxygen sensor 2
(bank 1)

[Engine is running]

●

Revving engine from idle up to 3,000 rpm
quickly after the following conditions are met.

–

Warm-up condition

–

Keeping the 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

124

Heated oxygen sensor 2
(bank 2)

[Engine is running]

●

Revving engine from idle up to 3,000 rpm
quickly after the following conditions are met.

–

Warm-up condition

–

Keeping the 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

125
126

W
W

Knock sensor (bank 1)
Knock sensor (bank 2)

[Engine is running]

●

Idle speed

Approximately 2.5V

151

L/B

Throttle control motor
(Open)

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is fully depressed

0 - 14V

152

Intake valve timing control
solenoid valve (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,500 rpm

7 - 12V

153

Throttle control motor
ground

[Ignition switch “ON”]

Approximately 0V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0058E

PBIB1790E

EC-108

TROUBLE DIAGNOSIS

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

CONSULT-II Function

EBS00LW4

FUNCTION

154

L/W

Throttle control motor
(Close)

[Ignition switch “ON”]

●

Engine stopped

●

Selector lever: “D”

●

Accelerator pedal is released

0 - 14V

155

W/B

Intake valve timing control
solenoid valve (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,500 rpm

7 - 12V

156
159
165
168

B
B
B/W
B/W

ECM ground

[Engine is running]

●

Idle speed

Engine ground

157

Throttle control motor relay
power supply

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

158

L/Y

EVAP canister vent control
valve

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

163
166

R
R

Power supply for ECM

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

164

Data link connector

[Ignition switch “ON”]

●

CONSULT-II or GST is disconnected.

BATTERY VOLTAGE
(11 - 14V)

171

P/B

CAN communication line

[Ignition switch “ON”]

Approximately 1.7 - 2.3V
Output voltage varies with the
communication status.

174

LG/B

CAN communication line

[Ignition switch “ON”]

Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0061E

PBIB1790E

Diagnostic test mode

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.

Self-diagnostic results

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data

can be read and erased quickly.*

Data monitor

Input/Output data in the ECM can be read.

Data monitor (SPEC)

Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.

Active test

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.

DTC & SRT confirmation

The status of system monitoring tests and the self-diagnosis status/result can be confirmed.

Content .. 364 365 366 367 ..