2005 INFINITI QX4 Factory Service Manual

TPMS reset transmission oil wheelbase headlight aiming power steering fluid brake light

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Page 1313 of 3419

INFINITI QX4 2005 Factory Service Manual EC-122Revision: October 2005
TROUBLE DIAGNOSIS
2005 QX56
66 RSensor ground
(Throttle position sensor)[Engine is running]Warm-up condition
Idle speedApproximately 0V
67 B Sensor ground[Engine is runn

Page 1314 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS
EC-123
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Revision: October 20052005 QX5682 B/RSensor ground
(APP sensor 1)[Engine is running]Warm-up condition
Idle speedApproximately 0V
83 G/WSensor groun

Page 1315 of 3419

INFINITI QX4 2005 Factory Service Manual EC-124Revision: October 2005
TROUBLE DIAGNOSIS
2005 QX56
101 R/W Stop lamp switch[Ignition switch: OFF]Brake pedal: Fully releasedApproximately 0V
[Ignition switch: OFF]
Brake pedal: Slightly depres

EC-124Revision: October 2005
TROUBLE DIAGNOSIS
2005 QX56
101 R/W Stop lamp switch[Ignition switch: OFF]Brake pedal: Fully releasedApproximately 0V
[Ignition switch: OFF]
Brake pedal: Slightly depressedBATTERY VOLTAGE
(11 - 14V)
102 GR/R PNP switch[Ignition switch: ON]
Selector lever: P or NApproximately 0V
[Ignition switch: ON]
Except the above gear positionBATTERY VOLTAGE
(11 - 14V)
104 O Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
106 BR/WAccelerator pedal position
sensor 1[Ignition switch: ON]
Engine: Stopped
Accelerator pedal: Fully released0.5 - 1.0V
[Ignition switch: ON]
Engine: Stopped
Accelerator pedal: Fully depressed4.2 - 4.8V
107 V/R Fuel tank temperature sensor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.
108 BR/WICC brake switch
(Models with ICC system)
ASCD brake switch
(Models with ASCD system)[Ignition switch: ON]
Brake pedal: Slightly depressedApproximately 0V
[Ignition switch: ON]
Brake pedal: Fully releasedBATTERY VOLTAGE
(11 - 14V)
109 L/W Ignition switch[Ignition switch: OFF]0V
[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
111 W / BECM relay
(Self shut-off)[Engine is running]
[Ignition switch: OFF]
For a few seconds after turning ignition
switch OFF0 - 1.5V
[Ignition switch: OFF]
More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
113 GR Fuel pump relay[Ignition switch: ON]
For 1 second after turning ignition switch
ON
[Engine is running]0 - 1.5V
[Ignition switch: ON]
More than 1 second after turning ignition
switch ONBATTERY VOLTAGE
(11 - 14V)
11 5
11 6B
B/WECM ground[Engine is running]
Idle speedBody ground
11 7 L / YEVAP canister vent control
valve[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
11 9
120BR
BRPower supply for ECM[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
121 WPower supply for ECM
(Back-up)[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V) TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)

Page 1316 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS
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Revision: October 20052005 QX56
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Page 1317 of 3419

INFINITI QX4 2005 Factory Service Manual EC-126Revision: October 2005
TROUBLE DIAGNOSIS
2005 QX56
CONSULT-II Function (ENGINE)UBS00L0B
FUNCTION
*: The following emission-related diagnostic information is cleared when the ECM memory is erased

Page 1318 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS
EC-127
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Revision: October 20052005 QX56
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOSTIC
R

Page 1319 of 3419

INFINITI QX4 2005 Factory Service Manual EC-128Revision: October 2005
TROUBLE DIAGNOSIS
2005 QX56
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on

Page 1320 of 3419

INFINITI QX4 2005 Factory Service Manual TROUBLE DIAGNOSIS
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Revision: October 20052005 QX56
5. Touch “ENGINE”.
If “ENGINE” is not indicated, go to GI-39, "
CONSULT-II Data
Link Connector (DLC) Circuit"

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