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