Acura CSX. Instruction — page 140

03

YES

NO

YES

NO

YES

NO

11-233

ECM/PCM CONNECTOR C (44P)

THROTTLE BODY 6P CONNECTOR

VCC3 (BLU)

VCC3 (BLU)

11. Turn the ignition switch to LOCK (0).

12. Jump the SCS line with the HDS.

13. Disconnect ECM/PCM connector C (44P).

14. Disconnect the throttle body 6P connector.

15. Check for continuity between ECM/PCM connector

terminal C12 and throttle body 6P connector
terminal No. 2.

Go to step 23.

Repair open in the wire between the throttle

body and the ECM/PCM (C12), then go to step 18.

16. Turn the ignition switch to LOCK (0).

17. Replace the throttle body; K20Z2 engine (see page

11-348), K20Z3 engine (see page 11-349).

18. Reconnect all connectors.

19. Turn the ignition switch to ON (II).

20. Reset the ECM/PCM with the HDS.

21. Do the ECM/PCM idle learn procedure (see page

11-310).

22. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at the throttle body 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.

23. Reconnect all connectors.

24. 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).

25. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at the throttle body 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.

Wire side of
female terminals

Terminal side of female terminals

Is ther e continuity?

Is DT C P0122 indicated?

Is DT C P0122 indicated?

08/08/21 14:23:43 61SNR030_110_0233

01

SNR9AA7K72100090123FAAT30

DTC P0123:

YES

NO

YES

NO

YES

NO

11-234

Electronic Throttle Control System

THROTTLE BODY 6P CONNECTOR

TPSA (RED/BLK)

TP Sensor A 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. Clear the DTC with the HDS.

3. Check TP SENSOR A in the DATA LIST with the

HDS.

Go to step 4.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the throttle body and the ECM/PCM.

4. Check for Temporary DTCs or DTCs with the HDS.

Go to step 13.

Go to step 5.

5. Turn the ignition switch to LOCK (0).

6. Disconnect the throttle body 6P connector.

7. Turn the ignition switch to ON (II).

8. Measure the voltage between throttle body 6P

connector terminal No. 1 and body ground.

Go to step 18.

Go to step 9.

9. Turn the ignition switch to LOCK (0).

10. Jump the SCS line with the HDS.

11. Disconnect ECM/PCM connector C (44P).

Wire side of female terminals

Is ther e about 4.8 V or mor e?

Ar e DT C P0123 and P0223 indicated at the same
time?

Is ther e about 5 V ?

08/08/21 14:23:43 61SNR030_110_0234

02

03

YES

NO

YES

NO

11-235

ECM/PCM CONNECTOR C (44P)

THROTTLE BODY 6P CONNECTOR

TPSA (RED/BLK)

TPSA (RED/BLK)

ECM/PCM CONNECTOR C (44P)

THROTTLE BODY 6P CONNECTOR

SG3 (GRN)

SG3 (GRN)

12. Check for continuity between ECM/PCM connector

terminal C20 and throttle body 6P connector
terminal No. 1.

Go to step 25.

Repair open in the wire between the throttle

body and the ECM/PCM (C20), then go to step 20.

13. Turn the ignition switch to LOCK (0).

14. Disconnect the throttle body 6P connector.

15. Jump the SCS line with the HDS.

16. Disconnect ECM/PCM connector C (44P).

17. Check for continuity between ECM/PCM connector

terminal C39 and throttle body 6P connector
terminal No. 4.

Go to step 25.

Repair open in the wire between the throttle

body and the ECM/PCM (C39), then go to step 20.

Wire side of
female terminals

Terminal side of female terminals

Wire side of female terminals

Terminal side of female terminals

Is ther e continuity?

Is ther e continuity?

08/08/21 14:23:44 61SNR030_110_0235

SNR9AA7K72100090222FAAT30

YES

NO

YES

NO

YES

NO

YES

NO

DTC P0222:

11-236

11-236

Electronic Throttle Control System

18. Turn the ignition switch to LOCK (0).

19. Replace the throttle body; K20Z2 engine (see page

11-348), K20Z3 engine (see page 11-349).

20. Reconnect all connectors.

21. Turn the ignition switch to ON (II).

22. Reset the ECM/PCM with the HDS.

23. Do the ECM/PCM idle learn procedure (see page

11-310).

24. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at the throttle body 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.

25. Reconnect all connectors.

26. 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).

27. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at the throttle body 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.

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. Clear the DTC with the HDS.

3. Check TP SENSOR B in the DATA LIST with the

HDS.

Go to step 4.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the throttle body and the ECM/PCM.

4. Check for Temporary DTCs or DTCs with the HDS.

Go to step 10.

Go to step 5.

TP Sensor B Circuit Low Voltage

Is DT C P0123 indicated?

Is DT C P0123 indicated?

Is ther e about 0.3 V or less?

Ar e DT C P0122 and P0222 indicated at the same
time?

08/08/21 14:23:44 61SNR030_110_0236

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