Acura TSX / Honda Accord CL. Manual - part 859

occurred to these parts. 

Transmission 8 mm housing bolts are left-hand threads. 

REVERSE LOCKOUT SYSTEM 

GENERAL TROUBLESHOOTING INFORMATION 

How to Troubleshoot Circuits at the ECM 

Special Tools Required: Backprobe set 07SAZ-001000A (2 required) 

1. Pull back the carpet from the passenger's and driver's side of the center console to expose the ECM.  

2. Connect the backprobe adapters (A) to the stacking patch cords (B), and connect the cords to a digital 

multimeter (C). 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

Fig. 3: Connecting The Backprobe Adapters To The Stacking Patch Cords & Connecting The 
Cords To A Digital Multimeter 

3. Using the wire insulation as a guide for the contoured tip of the backprobe adapter, gently slide the tip 

into the connector from the wire side until it touches the end of the wire terminal.  

COMPONENT LOCATION INDEX 

Fig. 4: Locating Reverse Lockout System Components 

SYSTEM DESCRIPTION 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

At a vehicle speed of 12 mph (20 km/h) or more, a signal from the vehicle speed sensor (VSS) activates the 
reverse lockout solenoid, which pushes the select lock cam B into the locked position. As a result, the select 
lever cannot rotate to the reverse select position, making it impossible to engage reverse gear. At a vehicle 
speed of 9 mph (15 km/h) or less, the signal from the VSS is interrupted which turns off the reverse lockout 
solenoid. The select lock return spring pulls the select lock cam B back, enabling the select lever to move freely 
so that reverse gear can be selected. 

Fig. 5: Reverse Lockout Solenoid Operation

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

Fig. 6: Reverse Lockout Solenoid Components 

CIRCUIT DIAGRAM 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed