Acura TSX / Honda Accord CL. Manual - part 861

Is there battery voltage? 

YES: Check for loose connectors at ECM connector B (31P). If necessary, update the ECM 
if it does not have the latest software, or substitute a known-good ECM, then recheck (see 
HOW TO SUBSTITUTE THE ECM/PCM ). If the symptom/indication goes away with a 
known-good ECM, replace the original ECM.  

NO: Repair open in the wire between reverse lockout solenoid and ECM (B2).  

Fig. 10: Measuring The Voltage Between ECM Connector B2 & Body Ground 

REVERSE LOCKOUT SOLENOID TEST 

1. Remove the reverse lockout solenoid (see REVERSE LOCKOUT SOLENOID 

DISASSEMBLY/REASSEMBLY ).  

2. Connect battery positive terminal to the No. 2 terminal of the reverse lockout solenoid 2P connector, and 

connect the battery negative terminal to the No. 1 terminal. 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

Fig. 11: Connecting The No. 2 Terminal Of The Reverse Lockout Solenoid To The Battery Positive 
Terminal & The No. 1 To The Battery Negative Terminal 

3. Check that the reverse lockout solenoid operates.  

4. If the reverse lockout solenoid does not work, replace it.  

REVERSE LOCKOUT SOLENOID DISASSEMBLY/REASSEMBLY 

1. Make sure you have the anti-theft codes for the radio and the navigation system, then write down the 

frequencies for the radio's preset buttons. Disconnect the negative (-) cable first, then the positive (+) 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

cable from the battery. Remove the battery. 

2. Remove the air cleaner housing (see AIR CLEANER REMOVAL/INSTALLATION ).  

3. Remove the battery base (see step 6 of ENGINE REMOVAL ).  

4. Carefully remove the shift cable, select cable, and cable bracket together so as not to bend the cables (see 

step 6 of TRANSMISSION REMOVAL ).  

5. Disconnect the countershaft speed sensor connector, back-up light switch connector, and reverse lockout 

solenoid connector (see step 7 of TRANSMISSION REMOVAL ).  

6. Remove the bolts (A) and reverse lockout solenoid (B). 

Fig. 12: Removing The Bolts & Reverse Lockout Solenoid 

7. Remove the roller (A), the select lock return spring (C), and the select lock cam B. 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

Fig. 13: Removing The Roller, The Select Lock Return Spring & The Select Lock Cam B 

8. Install in the reverse order of removal.  

9. Remove any dirt and oil from the sealing surface. Apply liquid gasket (P/N 08718-0001) to the sealing 

surface. 

10. Install the reverse lockout solenoid. 

NOTE:

If 4 minutes have passed after applying liquid gasket, reapply it and 
assemble the housings. Allow it to cure at least 20 minutes after assembly 
before filling the transmission with oil.

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed