Acura CSX. Manual — part 145
01
02
03
SNR9AA7K72100092122FAAT30
−
−
−
−
−
−
DTC P2122:
YES
NO
YES
NO
YES
NO
11-253
APP SENSOR 6P CONNECTOR
SG4 (BLU)
VCC4 (BRN)
APP SENSOR 6P CONNECTOR
APSA (YEL)
APP SENSOR 6P CONNECTOR
APSA (YEL)
JUMPER WIRE
APP Sensor A (TP Sensor D)
Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Check APP SENSOR A in the DATA LIST with the
HDS.
Go to step 3.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the APP sensor and the ECM/PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the APP sensor 6P connector.
5. Turn the ignition switch to ON (II).
6. Measure the voltage between APP sensor 6P
connector terminals No. 2 and No. 3.
Go to step 7.
Go to step 17.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect ECM/PCM connector A (44P).
10. Check for continuity between APP sensor 6P
connector terminal No. 1 and body ground.
Repair short in the wire between the ECM/
PCM (A17) and the APP sensor, then go to step 24.
Go to step 11.
11. Connect APP sensor 6P connector terminal No. 1 to
body ground with a jumper wire.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e about 0.2 V or less?
Is ther e about 5 V ?
Is ther e continuity?
08/08/21 14:26:45 61SNR030_110_0253
04
05
06
−
−
−
−
YES
NO
YES
NO
11-254
Electronic Throttle Control System
ECM/PCM CONNECTOR A (44P)
APSA (YEL)
APP SENSOR 6P CONNECTOR
VCC4 (BRN)
JUMPER WIRE
APSA (YEL)
APP SENSOR 6P CONNECTOR
VCC4 (BRN)
JUMPER WIRE
12. Check for continuity between ECM/PCM connector
terminal A17 and body ground.
Go to step 13.
Repair open in the wire between the ECM/
PCM (A17) and the APP sensor, then go to step 24.
13. Reconnect ECM/PCM connector A (44P).
14. Connect APP sensor 6P connector terminals No. 1
and No. 3 with a jumper wire.
15. Turn the ignition switch to ON (II).
16. Check APP SENSOR A in the DATA LIST with the
HDS.
Go to step 29.
Go to step 22.
17. Turn the ignition switch to LOCK (0).
18. Jump the SCS line with the HDS.
19. Disconnect ECM/PCM connector A (44P).
20. Connect APP sensor 6P connector terminal No. 3 to
body ground with a jumper wire.
Terminal side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e about 0.2 V or less?
08/08/21 14:26:46 61SNR030_110_0254
07
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
11-255
ECM/PCM CONNECTOR A (44P)
VCC4
(BRN)
21. Check for continuity between ECM/PCM connector
terminal A25 and body ground.
Go to step 30.
Repair open in the wire between the ECM/
PCM (A25) and the APP sensor, then go to step 24.
22. Turn the ignition switch to LOCK (0).
23. Replace the accelerator pedal module; K20Z2
engine (see page 11-269), K20Z3 engine (see page
11-270).
24. Reconnect all connectors.
25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure (see page
11-310).
28. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the APP sensor and the ECM/PCM,
then go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
29. Turn the ignition switch to LOCK (0).
30. Reconnect all connectors.
31. Update the ECM/PCM if it does not have the latest
software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).
32. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the APP sensor and the ECM/PCM. If
the ECM/PCM was updated, substitute a known-
good ECM/PCM (see page 11-7), then recheck. If the
ECM/PCM was substituted, go to step 1.
If the ECM/PCM was updated, troubleshooting
is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see page 11-228). If
any other Temporary DTCs or DTCs are indicated,
go to the indicated DTC’s troubleshooting.
Terminal side of female terminals
Is ther e continuity?
Is DT C P2122 indicated?
Is DT C P2122 indicated?
08/08/21 14:26:46 61SNR030_110_0255
01
02
03
SNR9AA7K72100092123FAAT30
−
−
−
−
−
−
DTC P2123:
YES
NO
YES
NO
YES
NO
11-256
Electronic Throttle Control System
APP SENSOR 6P CONNECTOR
SG4 (BLU)
VCC4 (BRN)
APP SENSOR 6P CONNECTOR
SG4 (BLU)
JUMPER WIRE
ECM/PCM CONNECTOR A (44P)
SG4 (BLU)
APP Sensor A (TP Sensor D)
Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Check APP SENSOR A in the DATA LIST with the
HDS.
Go to step 3.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the APP sensor and the ECM/PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the APP sensor 6P connector.
5. Turn the ignition switch to ON (II).
6. Measure the voltage between APP sensor 6P
connector terminals No. 2 and No. 3.
Go to step 12.
Go to step 7.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect ECM/PCM connector A (44P).
10. Connect APP sensor 6P connector terminal No. 2 to
body ground with a jumper wire.
11. Check for continuity between ECM/PCM connector
terminal A35 and body ground.
Go to step 19.
Repair open in the wire between the ECM/
PCM (A35) and the APP sensor, then go to step 14.
Wire side of female terminals
Wire side of female terminals
Terminal side of female terminals
Is ther e about 4.9 V or mor e?
Is ther e about 5 V ?
Is ther e continuity?
08/08/21 14:26:46 61SNR030_110_0256
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