Acura TSX / Honda Accord CL. Manual — part 534

Fig. 54: Measuring Voltage Between Throttle Actuator Control Module Relay Terminal No. 2 And
Body Ground

Is there battery voltage?

YES - Go to step 19.

NO - Go to step 18.

18. Check the No. 1 THROTTLE ACTUATOR CONTROL (15A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES - Repair open in the wire between the throttle actuator control module relay (+ B line) and the No. 1
THROTTLE ACTUATOR CONTROL (15A) fuse, then go to step 50 .

NO - Repair short in the wire between the throttle actuator control module relay (+ B line) and the No. 1
THROTTLE ACTUATOR CONTROL (15A) fuse, then go to step 50 .

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

19. Install the throttle actuator control module relay.

20. Measure voltage between throttle actuator control module 16P connector terminal No. 2 and body ground.

21. Turn the ignition switch ON (II).

Fig. 55: Measuring Voltage Between Throttle Actuator Control Module 16P Connector Terminal
No. 2 And Body Ground

Is there battery voltage for about 2 seconds?

YES - Substitute a known-good throttle actuator control module (see THROTTLE ACTUATOR
CONTROL MODULE REPLACEMENT ), then go to step 50 . and recheck. If DTC U0107 is not
indicated, replace the original throttle actuator control module (see THROTTLE ACTUATOR
CONTROL MODULE REPLACEMENT ), then go to step 50 .

NO - Go to step 22.

22. Turn the ignition switch OFF.

23. Remove the throttle actuator control module relay (A).

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 56: Removing The Throttle Actuator Control Module Relay

24. Check the throttle actuator control module relay (see RELAYS ).

Is the throttle actuator control module relay OK?

YES - Go to step 25.

NO - Replace the throttle actuator control module relay, then go to step 50 .

25. Turn the ignition switch ON (II).

26. Measure voltage between throttle actuator control module relay terminal No. 4 and body ground.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 57: Measuring Voltage Between Throttle Actuator Control Module Relay Terminal No. 4 And
Body Ground

Is there battery voltage?

YES - Go to step 27.

NO - Repair open in the wire between the throttle actuator control module relay and PGM-FI main relay
1 (FI MAIN), then go to step 50 .

27. Turn the ignition switch OFF.

28. Jump the SCS line with the HDS.

29. Disconnect ECM/PCM connector D (17P).

30. Check for continuity between ECM/PCM connector terminal D15 and throttle actuator control module

relay terminal No. 3.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX