Infiniti I35 (A33). Manual — part 282
SEF058Y
PROCEDURE FOR DTC P1126
With CONSULT-II
1)
Turn ignition switch ON and wait at least 2 seconds.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and let it idle for 5 seconds.
4)
If DTC is detected, go to “Diagnostic Procedure”, EC-471.
With GST
Follow the procedure “With CONSULT-II” above.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
DTC Confirmation Procedure (Cont’d)
EC-469
Wiring Diagram
NHEC1310
MEC360E
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
Wiring Diagram
EC-470
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.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
26
OR
Throttle control motor
relay
[Ignition switch OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch ON]
0 - 1.0V
102
R
Throttle control motor
relay power supply
[Ignition switch ON]
BATTERY VOLTAGE
(11 - 14V)
Diagnostic Procedure
NHEC1311
1
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect throttle control motor relay.
SEC044D
3. Check voltage between throttle control motor relay terminals 2, 5 and ground with CONSULT-II or tester.
SEC091D
Voltage: Battery voltage
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
Wiring Diagram (Cont’d)
EC-471
2
DETECT MALFUNCTIONING PART
Check the following.
I
15A fuse
I
Harness for open and short between throttle control motor relay and fuse
©
Repair open circuit or short to ground or short to power in harness or connectors.
3
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 102 and throttle control motor relay terminal 3.
Refer to Wiring Diagram.
Continuity should exist.
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.
I
Harness connector E15, F18
I
Harness for open and 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 FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 26 and throttle control motor relay terminal 1.
Refer to Wiring Diagram.
Continuity should exist.
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.
I
Harness connector E81, M15
I
Harness connectors M223, F53
I
Harness for open and 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 “Component Inspection”, EC-473.
OK or NG
OK
©
GO TO 8.
NG
©
Replace throttle control motor relay.
8
CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-152.
©
INSPECTION END
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
Diagnostic Procedure (Cont’d)
EC-472
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