Nissan March K13. Instruction — part 244
P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
EC-437
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3.
Check if foreign matter is caught between the throttle valve (1)
and the housing.
-
: Vehicle front
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.
Perform
XX-XX, "*****"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000006037447
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform throttle valve closed position learning. Refer to
.
>> GO TO 2
2.
PERFORM IDLE AIR VOLUME LEARNING
Perform idle air volume learning. Refer to
.
>> END
JSBIA0341ZZ
EC-438
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
DTC Logic
INFOID:0000000005886561
DTC DETECTION LOGIC
NOTE:
• If DTC P1122 is displayed with DTC P1121, first perform the trouble diagnosis for DTC P1121. Refer
• If DTC P1122 is displayed with DTC P1126, first perform the trouble diagnosis for DTC P1126. Refer
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 11 V 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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005886562
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E38. Refer to Ground Inspection in
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 10.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1122
Electric throttle control
performance
Electric throttle control function does not
operate properly.
• Harness or connectors
(Throttle control motor circuit is open or shorted)
• Electric throttle control actuator
ECM
Condition
Voltage
Connector
Terminal
+
−
F7
2
108
Ignition switch OFF
Approx. 0 V
Ignition switch ON
Battery voltage
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-439
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
NO
>> GO TO 3.
3.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Check voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 4.
4.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector E14.
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 E6, F1
• IPDM E/R connector E14
• Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK FUSE
1.
Disconnect 15 A fuse (No. 64) from IPDM E/R.
2.
Check 15 A fuse for blown.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace 15 A fuse.
7.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-III
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector E14.
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 9.
NO
>> GO TO 8.
ECM
Voltage
Connector
Terminal
+
−
F7
15
108
Battery voltage
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E14
57
F7
15
Existed
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E14
54
F7
2
Existed
EC-440
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
8.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E6, F1
• IPDM E/R connector E14
• Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK INTERMITTENT INCIDENT
Refer to
XX-XX, "*****"
.
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 harness or connectors.
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.
-
: Vehicle front
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
EC-441, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> GO TO 14.
13.
CHECK INTERMITTENT INCIDENT
Refer to
XX-XX, "*****"
.
Is the inspection result normal?
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F29
5
F7
1
Not existed
4
Existed
F29
6
F7
1
Existed
4
Not existed
JSBIA0341ZZ
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