Acura TSX / Honda Accord CL. Manual — part 531

Fig. 47: Measuring Resistance Between Throttle Body 6P Connector Terminals No. 5 And No. 6

Is there about 1.0 ohm or less?

YES - Go to step 5.

NO - Repair short in the wires between the throttle body and throttle actuator control module (motor
drive lines), then go to step 6.

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

6. Reconnect the throttle body 6P connector.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

7. Reconnect the throttle actuator control module 16P connector.

8. Turn the ignition switch ON (II).

9. Reset the ECM/PCM with the HDS.

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

11. Turn the ignition switch OFF.

12. Turn the ignition switch ON (II).

13. Slowly press the accelerator pedal to the floor.

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

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P2118 is indicated, check for poor connections or loose terminals at the throttle body and
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 P2176: THROTTLE ACTUATOR CONTROL SYSTEM IDLE POSITION NOT LEARNED

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch OFF.

4. Turn the ignition switch ON (II), and wait 10 seconds.

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

Is DTC P2176 indicated?

YES - Go to step 6.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the
throttle body and the throttle actuator control module, then clean the throttle body (see THROTTLE
BODY CLEANING ).

6. Turn the ignition switch OFF.

7. Disconnect the intake air duct from the throttle body.

8. Turn the ignition switch ON (II).

9. Clear the DTC with the HDS.

10. Do the ETCS TEST in the INSPECTION MENU with the HDS.

11. Visually check the throttle valve operations.

NOTE:

If DTC P2135 is stored at the same time as DTC P2176, troubleshoot DTC P2135
first, then recheck for DTC P2176.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Does the throttle valve move to its fully closed position?

YES - Go to step 12.

NO - Go to step 13.

12. Check for sludge or carbon on the throttle valve.

Is there sludge or carbon on the throttle valve?

YES - Clean the throttle body (see THROTTLE BODY CLEANING ), then go to step 21 and recheck.

NO - Go to step 19.

13. Turn the ignition switch OFF.

14. Disconnect the throttle body 6P connector.

15. Disconnect the throttle actuator control module 16P connector.

16. Connect throttle body 6P connector terminals No. 5 and No. 6 with a jumper wire.

NOTE:

Be careful not to pinch your finger. Keep hands away from the throttle
valve.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 48: Connecting Throttle Body 6P Connector Terminals No. 5 And No. 6 With A Jumper Wire

17. Check for continuity between throttle actuator control module 16P connector terminals No. 1 and No. 8.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX