Acura TSX / Honda Accord CL. Manual — part 860

Fig. 7: Reverse Lockout System Wiring Diagram

CIRCUIT TROUBLESHOOTING

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

2004 Acura TSX

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

Is the fuse OK?

YES: Go to step 2.

NO: Replace the fuse, and recheck.

2. Start the engine and check the malfunction indicator lamp (MIL).

Does the MIL come on?

YES: Troubleshoot the DTC (see GENERAL TROUBLESHOOTING
INFORMATION ), and recheck.

NO: Go to step 3.

3. Turn the ignition switch OFF.

4. Shift into reverse gear.

Can the transmission be shifted into reverse gear?

YES: Go to step 5.

NO: Repair the transmission and recheck.

5. Turn the ignition switch ON (II). With the vehicle moving slowly (vehicle speed below 9 mph (15 km/h),

shift the transmission into reverse gear.

Can the transmission be shifted into reverse gear?

YES: Go to step 6.

NO: Go to step 7 .

6. Raise the front wheels and block the rear wheels, run the vehicle to a speed above 12 mph (20 km/h).

Can the transmission be shifted into reverse gear?

YES: Go to step 7.

NO: Intermittent failure, system is OK at this time.

7. Turn the ignition switch OFF.

8. Disconnect the reverse lockout solenoid 2P connector.

9. Turn the ignition switch ON (II).

10. Measure the voltage between the reverse lockout solenoid 2P connector terminal No. 2 and body ground.

Is there battery voltage?

YES: Go to step 11.

NO: Check for loose or poor connections at connector. If the connections are OK, repair
open in the wire between No. 18 (15A) fuse in the underdash fuse/relay box and the reverse
lockout solenoid.

2004 Acura TSX

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

Fig. 8: Measuring Voltage Between The Reverse Lockout Solenoid 2P Connector Terminal
No. 2 & Body Ground

11. Turn the ignition switch OFF.

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

DISASSEMBLY/REASSEMBLY ).

13. Connect the No. 2 terminal of the reverse lockout solenoid to the battery positive terminal, and connect

the No. 1 to the battery negative terminal. Check that the reverse lockout solenoid operates.

Does the reverse lockout solenoid operate properly?

2004 Acura TSX

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

YES: Go to step 14.

NO: Replace the reverse lockout solenoid.

Fig. 9: Connecting The No. 2 Terminal Of The Reverse Lockout Solenoid To The Battery
Positive Terminal & The No. 1 To The Battery Negative Terminal

14. Reinstall the reverse lockout solenoid and reconnect the solenoid 2P connector.

15. Turn the ignition switch ON (II).

16. Measure the voltage between ECM connector B2 and body ground.

2004 Acura TSX

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed