2003 NISSAN X-TRAIL Electronic Repair Manual

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Page 1649 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-535
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3. Turn ignition switch "OFF", wait at least 10 seconds, and then turn "ON".
4. Perform "Diagnosti

Page 1650 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-536
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
PFP:16119
DescriptionEBS00BIQ
NOTE:
If DTC P1122 is displayed with DTC P1121, f

EC-536
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
PFP:16119
DescriptionEBS00BIQ
NOTE:
If DTC P1122 is displayed with DTC P1121, first perform the trouble diagnosis for DTC P1121. Refer to
EC-534
.
Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
ECM Terminals and Reference ValueEBS00BIR
Specification data are reference values and are measured between each terminal and body 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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS00BIS
FAIL -S AFE M OD E
When the malfunction A is detected, the ECM enters fail-safe mode and the MI lights up.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
11 4 RThrottle control motor
(Open)[Ignition switch "ON"]
lGear position is "D" (A/T model)
lGear position is "1st" (M/T model)
lAccelerator pedal is depressing0 - 14V
11 5 B / YThrottle control motor
ground[Engine is running]
lIdle speedApproximately 0V
11 6 GThrottle control motor
(Close)[Ignition switch "ON"]
lGear position is "D" (A/T model)
lGear position is "1st" (M/T model)
lAccelerator pedal is releasing0 - 14V
PBIB0533E
PBIB0534E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1122
11 2 2Electric throttle control
functionA)Electric throttle control feedback function does
not operate properly.
lHarness or connectors
(Throttle control motor circuit is
open or shorted.)
lElectric throttle control actuator B)An excessively high ampere of current flows
through throttle control motor to ECM.
Detected items Engine operating condition in fail-safe mode
Malfunction AECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5
degrees) by the return spring.

Page 1651 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-537
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DTC Confirmation ProcedureEBS00BIT
NOTE:
If “DTC Confirmation Procedure” has been previously c

Page 1652 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-538
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
Wiring Diagram
EBS00BIU
TBWA0092E

Page 1653 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-539
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Diagnostic ProcedureEBS00BIV
1.RETIGHTEN GROUND SCREWS
1. Turn ignition switch "OFF".
2. Loosen an

Page 1654 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-540
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
4.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is caught betw

Page 1655 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-541
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2. Check resistance between terminals 3 and 6.
3. If NG, replace electric throttle control actuato

Page 1656 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-542
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DTC P1123 THROTTLE CONTROL MOTOR RELAY
DTC P1123 THROTTLE CONTROL MOTOR RELAY
PFP:16119
Component DescriptionEBS00BIX
Power supply for the Throttle Control motor is prov

EC-542
[QR (WITHOUT EURO-OBD)]
DTC P1123 THROTTLE CONTROL MOTOR RELAY
DTC P1123 THROTTLE CONTROL MOTOR RELAY
PFP:16119
Component DescriptionEBS00BIX
Power supply for the Throttle Control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
CONSULT-II Reference Value in Data Monitor ModeEBS00BIY
Specification data are reference values.
ECM Terminals and Reference ValueEBS00BIZ
Specification data are reference values and are measured between each terminal and body 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.
On Board Diagnosis LogicEBS00BJ0
FAIL -S AFE M OD E
ECM enters fail-safe mode when the malfunction A is detected.
DTC Confirmation ProcedureEBS00BJ1
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch “ON” and wait at least 1 second.
MONITOR ITEM CONDITION SPECIFICATION
THRTL RELAY
lIgnition switch: ON ON
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
11 2 W / RThrottle control motor
relay[Ignition switch "OFF"]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch "ON"]0-1.0V
11 3 W / BThrottle control motor
relay power supply[Ignition switch "ON"]BATTERY VOLTAGE
(11 - 14V)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1123
11 2 3Throttle control motor
relay circuitA)ECM detect the throttle control motor relay is
stuck ON.
lHarness or connectors
(Throttle control motor relay cir-
cuit is open or shorted.)
lThrottle control motor relay B)ECM detect the throttle control motor relay is
stuck OFF.
Detected items Engine operating condition in fail-safe mode
Malfunction AECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening
(approx. 5 degrees) by the return spring.

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