2005 NISSAN X-TRAIL check

DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-735
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11 . CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK >> GO TO 12.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.
12. CHECK THROTTLE CONTROL MOTOR
Refer to EC-735, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> GO TO 14.
13. CHECK INTERMITTENT INCIDENT
Refer to EC-624, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 14.
NG >> Repair or replace harness or connectors.
14. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-560, "
Throttle Valve Closed Position Learning" .
3. Perform EC-560, "
Idle Air Volume Learning" .
>>INSPECTION END
Component InspectionEBS0110R
THROTTLE CONTROL MOTOR RELAY
1. Apply 12V direct current between relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5.
3. If NG, replace throttle control motor relay.
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
PBIB0518E
Conditions Continuity
12V direct current supply between terminals
1 and 2Ye s
No current supply No
PBIB0098E

EC-736
[QR (WITHOUT EURO-OBD)]
DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION

2. Check resistance between terminals 3 and 6.
3. If NG, replace electric throttle control actuator and go to next
step.
4. Perform EC-560, "
Throttle Valve Closed Position Learning" .
5. Perform EC-560, "
Idle Air Volume Learning" .
Removal and InstallationEBS0110S
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-18, "INTAKE MANIFOLD" . Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)]
PBIB0095E

EC-742
[QR (WITHOUT EURO-OBD)]
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

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.
Diagnostic ProcedureEBS0110Y
1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect throttle control motor relay.
3. Check voltage between throttle control motor relay terminals 2, 5
and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.

15A fuse

Harness for open or short between throttle control motor relay and battery
>> Repair or replace harness or connectors.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3W/BThrottle control motor
relay power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
104 W/BThrottle control motor
relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
PBIB1972E
Voltage: Battery voltage
PBIB0575E

DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-743
[QR (WITHOUT EURO-OBD)]
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3. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between throttle control motor relay terminal 3 and ECM terminal 3.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E61, F38

Harness for open or short between throttle control motor relay and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK THROTTLE CONTROL MOTOR RELAY OUTPUT SIGNAL CIRCUIT
1. Check continuity between throttle control motor relay terminal 1 and ECM terminal 104.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E116, M75 (LHD models)

Harness connectors E106, M14 (RHD models)

Harness for open or short between throttle control motor relay and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK THROTTLE CONTROL MOTOR RELAY
Refer to EC-744, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace throttle control motor relay.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-624, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
Continuity should exist.

EC-744
[QR (WITHOUT EURO-OBD)]
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY

Component InspectionEBS0110Z
THROTTLE CONTROL MOTOR RELAY
1. Apply 12V direct current between relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5.
3. If NG, replace throttle control motor relay.
Conditions Continuity
12V direct current supply between terminals
1 and 2Ye s
No current supply No
PBIB0098E

EC-750
[QR (WITHOUT EURO-OBD)]
DTC P1128 THROTTLE CONTROL MOTOR

Diagnostic ProcedureEBS01114
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-632, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2021E

DTC P1128 THROTTLE CONTROL MOTOR
EC-751
[QR (WITHOUT EURO-OBD)]
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2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Disconnect electric throttle control actuator harness connector.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. CHECK THROTTLE CONTROL MOTOR
Refer to EC-751, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-624, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness or connectors.
5. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-560, "
Throttle Valve Closed Position Learning" .
3. Perform EC-560, "
Idle Air Volume Learning" .
>>INSPECTION END
Component InspectionEBS01115
THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
Electric throttle control
actuator terminalECM terminal Continuity
34 Should exist
5 Should not exist
64 Should not exist
5 Should exist
PBIB1992E
PBIB1971E

EC-752
[QR (WITHOUT EURO-OBD)]
DTC P1128 THROTTLE CONTROL MOTOR

2. Check resistance between terminals 3 and 6.
3. If NG, replace electric throttle control actuator and go to next
step.
4. Perform EC-560, "
Throttle Valve Closed Position Learning" .
5. Perform EC-560, "
Idle Air Volume Learning" .
Removal and InstallationEBS01116
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-18, "INTAKE MANIFOLD" . Resistance: Approximately 1 - 15 Ω [at 25 °C (77°F)]
PBIB0095E