Infiniti Q45. Manual — part 497
DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY
EC-627
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EC
DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY
PFP:16119
Component Description
NBS001ZV
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.
CONSULT-II Reference Value in Data Monitor Mode
NBS001ZW
Specification data are reference values.
On Board Diagnosis Logic
NBS001ZX
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure
NBS001ZY
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR DTC P2100
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-630, "Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
MONITOR ITEM
CONDITION
SPECIFICATION
THRTL RELAY
●
Ignition switch: ON
ON
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2100
2100
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
P2103
2103
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
Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.
SEF058Y
EC-628
DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY
PROCEDURE FOR DTC P2103
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8V.
With CONSULT-II
1.
Turn ignition switch ON and wait at least 1 second.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
If DTC is detected, go to
EC-630, "Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
SEF058Y
DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY
EC-629
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Wiring Diagram
NBS001ZZ
TBWM1238E
EC-630
DTC P2100, P2103 THROTTLE CONTROL MOTOR RELAY
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic Procedure
NBS00200
1.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect throttle control motor relay harness connector.
3.
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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
3
L
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
L/W
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Released
0 - 14V
5
L/B
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
0 - 14V
104
OR
Throttle control motor relay
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
0 - 1.0V
PBIB1104E
PBIB1105E
PBIB0031E
Voltage: Battery voltage
PBIB0097E
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