NISSAN TIIDA 2007 Service Repair Manual

EC-222
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
DescriptionINFOID:0000000001670987
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 throttle position sensor detects the throttle valve position, and the opening and closing speed of the throt-
tle valve and feeds the voltage signals to the ECM. The ECM judges the current opening angle of the throttle
valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening
angle properly in response to driving condition.
DTC LogicINFOID:0000000001670988
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1. Turn ignition switch ON and wait at least 1 second.
2. Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
3. Set shift lever to P or N (A/T), Neutral (M/T) position.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Turn ignition switch ON and wait at least 1 second.
6. Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
7. Set shift lever to P or N (A/T), Neutral (M/T) position.
8. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
9. Check DTC.
Is DTC detected?
YES >> Go to EC-222, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Set shift lever to D (A/T), 1st (M/T) position and wait at least 3 seconds.
3. Set shift lever to P or N (A/T), Neutral (M/T) position.
4. Start engine and let it idle for 3 seconds.
5. Check DTC.
Is DTC detected?
YES >> Go to EC-222, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001670989
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1121Electric throttle control
actuatorA)Electric throttle control actuator does not func-
tion properly due to the return spring malfunc-
tion.
 Electric throttle control actuator
B)Throttle valve opening angle in fail-safe mode is
not in specified range.
C) ECM detect the throttle valve is stuck open.

P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-223
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
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1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is caught between the throttle valve (1)
and the housing.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Remove the foreign matter and clean the electric throttle
control actuator inside.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Go to EC-223, "
Special Repair Requirement".
>> INSPECTION END
Special Repair RequirementINFOID:0000000001670990
1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-27, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-27, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
>> END
2. Electric throttle control actuator
JMBIA0447ZZ

EC-224
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
DescriptionINFOID:0000000001670991
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.
DTC LogicINFOID:0000000001670992
DTC DETECTION LOGIC
NOTE:
If DTC P1122 is displayed with DTC P1121 or P1126, first perform the trouble diagnosis for DTC P1121
or P1126. Refer to EC-228, "
DTC Logic" or EC-222, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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 11V when engine
is running.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-224, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001670993
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E15. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1. Check the voltage between ECM harness connector terminals as follows.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1122Electric throttle control
performanceElectric throttle control function does not oper-
ate properly. Harness or connectors
(Throttle control motor circuit is open or
shorted)
 Electric throttle control actuator

P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-225
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Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 3.
3.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1. Turn ignition switch OFF.
2. Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 4.
4.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E8, F8
 Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness connectors.
6.CHECK FUSE
1. Disconnect 15A fuse (No. 52) from IPDM E/R.
2. Check 15A fuse for blown.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace 15A fuse.
7.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-III
1. Check the continuity between ECM harness connector and IPDM E/R harness connector.
(+) (–)
Condition Voltage
Connector Terminal Connector Terminal
F10 2 F16 108Ignition switch OFF Approx. 0V
Ignition switch ON Battery voltage
(+) (–)
Vo l ta g e
Connector Terminal Connector Terminal
F10 15 E16 108 Battery voltage
IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E46 46 F10 15 Existed
IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E43 8 F10 2 Existed

EC-226
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E8, F8
 Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness connectors.
9.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
10.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 11.
NO >> Repair or replace.
11 .CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve (1)
and the housing.
Is the inspection result normal?
YES >> GO TO 12.
NO >> Remove the foreign matter and clean the electric throttle
control actuator inside.
12.CHECK THROTTLE CONTROL MOTOR
Refer to EC-227, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 13.
NO >> GO TO 14.
Electric throttle control actuator ECM
Continuity
Connector Terminal Connector Terminal
F75
F101 Not existed
4 Existed
61 Existed
4 Not existed
2. Electric throttle control actuator
JMBIA0447ZZ

P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-227
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
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13.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> GO TO 14.
NO >> Repair or replace harness or connectors.
14.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace malfunction electric throttle control actuator.
2. Go to EC-227, "
Special Repair Requirement".
>> INSPECTION END
Component InspectionINFOID:0000000001670994
1.CHECK THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between electric throttle control actuator terminals as follows.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Go to EC-227, "
Special Repair Requirement".
>> INSPECTION END
Special Repair RequirementINFOID:0000000001670995
1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-27, "
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
>> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-27, "
IDLE AIR VOLUME LEARNING : Special Repair Requirement".
>> END
Terminals Resistance
5 and 6 Approx. 1 - 15 Ω [at 25 °C (77°F)]

EC-228
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
DescriptionINFOID:0000000001670996
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.
DTC LogicINFOID:0000000001670997
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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 8V.
Witch DTC is detected?
P1126 >> GO TO 2.
P1124 >> GO TO 3.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1126
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-228, "Diagnosis Procedure".
NO >> INSPECTION END
3.PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1124
1. Turn ignition switch ON and wait at least 1 second.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-228, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001670998
1.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1. Turn ignition switch OFF.
2. Check the voltage between ECM harness connector terminals as follows.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1124Throttle control motor
relay circuit openECM detects a voltage of power source for
throttle control motor is excessively low. Harness or connectors
(Throttle control motor relay circuit is
open)
 Throttle control motor relay
P1126Throttle control motor
relay circuit shortECM detect the throttle control motor relay is
stuck ON. Harness or connectors
(Throttle control motor relay circuit is
shorted)
 Throttle control motor relay

P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-229
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
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Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between ECM harness connector and IPDM E/R harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E8, F8
 Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness connectors.
4.CHECK FUSE
1. Disconnect 15A fuse (No. 52) from IPDM E/R.
2. Check 15A fuse for blown.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Replace 15A fuse.
5.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1. Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 6.
6.CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1. Check the continuity between ECM harness connector and IPDM E/R harness connector.
2. Also check harness for short to ground and short to power.
(+) (–)
Vo l ta g e
Connector Terminal Connector Terminal
F10 15 E16 108 Battery voltage
IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E46 46 F10 15 Existed
(+) (–)
Condition Voltage
Connector Terminal Connector Terminal
F10 2 E16 108Ignition switch OFF Approx. 0V
Ignition switch ON Battery voltage
IPDM E/R ECM
Continuity
Connector Terminal Connector Terminal
E43 8 F10 2 Existed

EC-230
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E8, F8
 Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness connectors.
8.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.

P1128 THROTTLE CONTROL MOTOR
EC-231
< COMPONENT DIAGNOSIS >[HR16DE (WITH EURO-OBD)]
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P1128 THROTTLE CONTROL MOTOR
DescriptionINFOID:0000000001670999
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.
DTC LogicINFOID:0000000001671000
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-231, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001671001
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E15. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect electric throttle control actuator harness connector.
2. Disconnect ECM harness connector.
3. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1128Throttle control motor
circuit shortECM detects short in both circuits between
ECM and throttle control motor. Harness or connectors
(Throttle control motor circuit is shorted.)
 Electric throttle control actuator
(Throttle control motor)
Electric throttle control actuator ECM
Continuity
Connector Terminal Connector Terminal
F75
F101 Not existed
4 Existed
61 Existed
4 Not existed