Nissan March K13. Manual — part 245
P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-441
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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.
Perform
XX-XX, "*****"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005886563
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.
Perform
XX-XX, "*****"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000006037449
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
Terminals
Resistance [at 25
°
C (77
°
F)]
5 and 6
Approx. 1 - 15
Ω
EC-442
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
DTC Logic
INFOID:0000000005886566
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 8 V.
Witch DTC is detected?
P1124 >> GO TO 2.
P1126 >> GO TO 3.
2.
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
NO
>> INSPECTION END
3.
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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005886567
1.
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 5.
NO
>> GO TO 2.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1124
Throttle control motor
relay circuit short
ECM detect the throttle control motor relay is
stuck ON.
• Harness or connectors
(Throttle control motor relay circuit is
shorted)
• Throttle control motor relay
P1126
Throttle control motor
relay circuit open
ECM 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
ECM
Voltage
Connector
Terminal
+
−
F7
15
108
Battery voltage
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-443
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
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 4.
NO
>> GO TO 3.
3.
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.
4.
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 8.
NO
>> Replace 15 A fuse.
5.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
1.
Check voltage between ECM harness connector and ground under the following conditions.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 6.
6.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector E14.
4.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 8.
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F7
15
E14
57
Existed
ECM
Conditions
Voltage
Connector
Terminal
+
−
F7
2
108
Ignition switch: OFF
Approx. 0 V
Ignition switch: ON
Battery voltage
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F7
2
E14
54
Existed
EC-444
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 2)]
P1124, P1126 THROTTLE CONTROL MOTOR RELAY
NO
>> GO TO 7.
7.
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.
8.
CHECK INTERMITTENT INCIDENT
Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace harness or connectors.
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