2001 NISSAN X-TRAIL Service Repair Manual

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Page 1625 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-1275
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTIONPFP:16119
DescriptionEBS00N7H
NOTE:
If DTC P1122 is

DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-1275
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTIONPFP:16119
DescriptionEBS00N7H
NOTE:
If DTC P1122 is displayed with DTC P1121, first perform the trouble diagnosis for DTC P1121. Refer to
EC-1273
.
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 ValueEBS00N7I
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 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 LogicEBS00N7J
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
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”]
●Engine stopped
●Gear position is “D” (A/T model)
●Gear position is “1st” (M/T model)
●Accelerator pedal is depressing0 - 14V
11 5 B / YThrottle control motor
ground[Engine is running]
●Idle speedApproximately 0V
11 6 GThrottle control motor
(Close)[Ignition switch “ON”]
●Engine stopped
●Gear position is “D” (A/T model)
●Gear position is “1st” (M/T model)
●Accelerator 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.
●Harness or connectors
(Throttle control motor circuit is
open or shorted.)
●Electric 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 1626 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1276
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
DTC Confirmation Procedure
EBS00N7K
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn i

Page 1627 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-1277
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Wiring DiagramEBS00N7L
TBWA0092E

Page 1628 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1278
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
Diagnostic Procedure
EBS00N7M
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine

Page 1629 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-1279
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4.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if

Page 1630 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1280
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DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
Component Inspection
EBS00N7N
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector F1

Page 1631 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P1123 THROTTLE CONTROL MOTOR RELAY
EC-1281
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DTC P1123 THROTTLE CONTROL MOTOR RELAYPFP:16119
Component DescriptionEBS00N7O
Power supply for the Thr

DTC P1123 THROTTLE CONTROL MOTOR RELAY
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DTC P1123 THROTTLE CONTROL MOTOR RELAYPFP:16119
Component DescriptionEBS00N7O
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 ModeEBS00N7P
Specification data are reference values.
ECM Terminals and Reference ValueEBS00N7Q
Specification data are reference values and are measured between each terminal and 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 LogicEBS00N7R
FAIL-SAFE MODE
ECM enters fail-safe mode when the malfunction A is detected.
DTC Confirmation ProcedureEBS00N7S
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
●Ignition 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 detects the throttle control motor relay is
stuck ON.
●Harness or connectors
(Throttle control motor relay cir-
cuit is open or shorted.)
●Throttle control motor relay B)ECM detects 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.

Page 1632 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-1282
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DTC P1123 THROTTLE CONTROL MOTOR RELAY
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If 1st trip DTC is detected, go to EC-1284, "
Diagnostic Proc

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