Infiniti G35 (V35). Manual — part 425
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-581
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EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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
NBS000W4
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body. Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
3
W/R
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
BR
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine stopped
●
Shift lever: D (A/T) or 1st (M/T)
●
Accelerator pedal: Fully released
0 - 14V
5
G
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine stopped
●
Shift lever: D (A/T) or 1st (M/T)
●
Accelerator pedal: Fully depressed
0 - 14V
104
G/W
Throttle control motor relay
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
0 - 1.0V
PBIB1104E
PBIB1105E
PBIB2192E
EC-582
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
Check voltage between ECM terminal 3 and ground under the fol-
lowing conditions with CONSULT-II or tester.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 3.
3.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Check voltage between ECM terminal 104 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 7.
NG
>> 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 E9.
3.
Check continuity between ECM terminal 104 and IPDM E/R terminal 47.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E12, F3
●
Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK FUSE
1.
Disconnect 15A fuse.
2.
Check 15A fuse for blown.
OK or NG
OK
>> GO TO 7.
NG
>> Replace 15A fuse.
Ignition switch
Voltage
OFF
Approximately 0V
ON
Battery voltage
(11 - 14V)
MBIB0028E
Voltage: Battery voltage
PBIB1171E
Continuity should exist.
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-583
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EC
7.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector E8.
3.
Check continuity between ECM terminal 3 and IPDM E/R terminal 42.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E11, F2
●
Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
NG
>> 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 harness continuity between the following terminals.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 11.
NG
>> Repair or replace.
Continuity should exist.
Electric throttle control
actuator terminal
ECM terminal
Continuity
3
5
Should not exist
4
Should exist
6
5
Should exist
4
Should not exist
PBIB0995E
EC-584
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
11.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Remove the intake air duct.
2.
Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK
>> GO TO 12.
NG
>> Remove the foreign matter and clean the electric throttle
control actuator inside.
12.
CHECK THROTTLE CONTROL MOTOR
Refer to
EC-584, "Component Inspection"
OK or NG
OK
>> GO TO 13.
NG
>> GO TO 14.
13.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
OK or NG
OK
>> GO TO 14.
NG
>> Repair or replace harness or connectors.
14.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-79, "Throttle Valve Closed Position Learning"
3.
Perform
EC-79, "Idle Air Volume Learning"
>> INSPECTION END
Component Inspection
NBS000W5
THROTTLE CONTROL MOTOR
1.
Disconnect electric throttle control actuator harness connector.
2.
Check resistance between terminals 3 and 6.
3.
If NG, replace electric throttle control actuator and go to next
step.
4.
Perform
EC-79, "Throttle Valve Closed Position Learning"
5.
Perform
EC-79, "Idle Air Volume Learning"
Removal and Installation
NBS000W6
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to
EM-18, "INTAKE MANIFOLD COLLECTOR"
PBIB1015E
Resistance: Approximately 1 - 15
Ω
[at 25
°
C (77
°
F)]
PBIB0095E
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