Infiniti G20 (P11). Manual — part 259
Wiring Diagram
NCEC0292
TEC716
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Wiring Diagram
EC-447
Diagnostic Procedure
NCEC0293
1
CHECK CLOSED THROTTLE POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect throttle position switch harness connector.
SEF837X
3. Turn ignition switch “ON”.
4. Check voltage between throttle position switch terminal 5 and engine ground with CONSULT-II or tester.
SEF346X
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors M62, F24
I
10A fuse
I
Harness for open or short between throttle position switch and fuse
©
Repair harness or connectors.
3
CHECK CLOSED THROTTLE POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 40 and throttle position switch terminal 4.
Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 4.
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure
EC-448
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness for open or short between ECM and throttle position switch
I
Harness for open or short between throttle position switch and TCM (Transmission control module)
©
Repair open circuit or short to ground or short to power in harness or connectors.
5
CHECK IGNITION TIMING AND ENGINE IDLE SPEED
Check the following items. Refer to “Basic Inspection”, EC-107.
MTBL0391
Models with CONSULT-II
©
GO TO 6.
Models without CON-
SULT-II
©
GO TO 7.
6
CHECK THROTTLE POSITION SWITCH
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Remove vacuum hose connected to throttle opener.
4. Connect suitable vacuum hose to vacuum pump and the throttle opener.
5. Apply vacuum [more than −40.0 kPa (−300 mmHg, −11.81 inHg)] until the throttle drum becomes free from the rod of
the throttle opener.
SEF793W
6. Turn ignition switch “ON”.
7. Select “DATA MONITOR” mode with CONSULT-II.
8. Check indication of “CLSD THL/P SW” under the following conditions.
Measurement must be made with throttle position switch installed in vehicle.
MTBL0355
OK or NG
OK (With CONSULT-II)
©
GO TO 9.
OK (Without CONSULT-
II)
©
GO TO 10.
NG
©
GO TO 8.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure (Cont’d)
EC-449
7
CHECK THROTTLE POSITION SWITCH
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Remove vacuum hose connected to throttle opener.
4. Connect suitable vacuum hose to vacuum pump and the throttle opener.
5. Apply vacuum [more than −40.0 kPa (−300 mmHg, −11.81 inHg)] until the throttle drum becomes free from the rod of
the throttle opener.
SEF793W
6. Disconnect closed throttle position switch harness connector.
7. Check continuity between closed throttle position switch terminals 4 and 5 under the following conditions.
Resistance measurement must be made with throttle position switch installed in vehicle.
SEF940X
OK or NG
OK (With CONSULT-II)
©
GO TO 9.
OK (Without CONSULT-
II)
©
GO TO 10.
NG
©
GO TO 8.
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure (Cont’d)
EC-450
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