Acura TSX / Honda Accord CL. Manual — part 522

Fig. 21: Checking For Continuity Between Throttle Actuator Control Module 16P Connector
Terminals No. 10 And No. 12

Is there continuity?

YES - Go to step 12.

NO - Substitute a known-good throttle actuator control module (see THROTTLE ACTUATOR
CONTROL MODULE REPLACEMENT ), then go to step 16 and recheck. If DTC P2135 is not
indicated, replace the original throttle actuator control module (see THROTTLE ACTUATOR
CONTROL MODULE REPLACEMENT ), then go to step 16.

13. Disconnect the throttle body 6P connector.

14. Check for continuity between throttle actuator control module 16P connector terminals No. 10 and No.

12.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 22: Checking For Continuity Between Throttle Actuator Control Module 16P Connector
Terminals No. 10 And No. 12

Is there continuity?

YES - Repair short in the wire between the TPSA line and the TPSB line, then go to step 16.

NO - Go to step 14.

15. Turn the ignition switch OFF.

16. Replace the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).

17. Turn the ignition switch ON (II).

18. Reset the ECM/PCM with the HDS.

19. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

20. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P2135 is indicated, check for poor connections or loose terminals at the throttle body and

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

the throttle actuator control module, then go to step 1. If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC troubleshooting.

NO - Troubleshooting is complete.

DTC P2122: APP SENSOR A CIRCUIT LOW VOLTAGE

1. Turn the ignition switch ON (II).

2. Check APP SENSOR-A in the DATA LIST with the HDS.

Is there about 0.1 V, or less with the accelerator pedal fully pressed?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at
APP sensor A and at the ECM/PCM.

3. Turn the ignition switch OFF.

4. Disconnect the APP sensor 6P connector.

5. Turn the ignition switch ON (II).

6. At the wire harness side, measure voltage between APP sensor 6P connector terminals No. 5 and No. 6.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 23: Measuring Voltage Between APP Sensor 6P Connector Terminals No. 5 And No. 6

Is there about 5 V ?

YES - Go to step 7.

NO - Go to step 15.

7. Turn the ignition switch OFF.

8. At the sensor side, measure resistance between APP sensor 6P connector terminals No. 4 and No. 6 with

the throttle fully closed.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX