Infiniti F50. Manual — part 451
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-445
C
D
E
F
G
H
I
J
K
L
M
A
EC
With GST
Follow the procedure “With CONSULT-II” above.
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.
EC-447, "Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
SEF058Y
EC-446
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
Wiring Diagram
EBS00MHY
TBWM0122E
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-447
C
D
E
F
G
H
I
J
K
L
M
A
EC
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 Procedure
EBS00MHZ
1.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY
1.
Turn ignition switch “OFF”
2.
Disconnect throttle control motor relay harness connector.
3.
Disconnect ECM harness connector.
4.
Check voltage between throttle control motor relay terminals 2, 3
and ground with CONSULT-II or tester.
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.
TER-
MINAL
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
157
L
Throttle control motor relay
power supply
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
PBIB0031E
Voltage: Battery voltage
PBIB0097E
EC-448
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
3.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check continuity between ECM terminal 157 and throttle control motor relay terminal 5.
Refer to Wiring Diagram.
2.
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 F32, E32
●
Harness for open or short between ECM and throttle control motor relay
>> 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 continuity between ECM terminal 26 and throttle control motor relay terminal 1.
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 F32, E32
●
Harness for open or short between ECM and throttle control motor relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK THROTTLE CONTROL MOTOR RELAY
Refer to
EC-448, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace throttle control motor relay.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00MI0
THROTTLE CONTROL MOTOR RELAY
1.
Apply 12V direct current between relay terminals 1 and 2.
Continuity should exist.
Continuity should exist.
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