Honda Civic. Manual — part 189

52. Clear the DTC with the HDS.
53. Start the engine.
54. With the brake pedal pressed, move the shift lever through all positions. Stop

for at least 1 second in each position.

55. Check for DTCs with the HDS.

Is DTC P0705 indicated?

YES -Check for intermittent short to body ground in the wire between the
transmission range switch and the PCM, then go to step 1.

NO -Go to step 56.

56. Monitor the OBD STATUS for P0705 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -Troubleshooting is complete. If any other DTCs were indicated in step
55, go to the INDICATED DTC'S TROUBLESHOOTING.

NO -If the HDS indicates FAILED, check for intermittent short to body ground
in the wire between the transmission range switch and the PCM, then go to step
1. If the HDS indicates NOT COMPLETED, go to step 53.

57. Update the PCM if it does not have the latest software (see UPDATING THE

PCM ), or substitute a known-good PCM (see SUBSTITUTING THE
PCM ).

58. Start the engine.
59. With the brake pedal pressed, move the shift lever through all positions. Stop

for at least 1 second in each position.

60. Check for DTCs with the HDS.

Is DTC P0705 indicated?

YES -Check for intermittent short to body ground in the wire between the
transmission range switch and the PCM. If the PCM was updated, substitute a

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

known-good PCM (see SUBSTITUTING THE PCM ), then go to step 58. If
the PCM was substituted, go to step 1.

NO -Go to step 61.

61. Monitor the OBD STATUS for P0705 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -If the PCM was updated, troubleshooting is complete. If the PCM was
substituted, replace the original PCM (see ECM/PCM REPLACEMENT ). If
any other DTCs were indicated in step 60, go to the INDICATED DTC'S
TROUBLESHOOTING.

NO -If the HDS indicates FAILED, check for intermittent short to body ground
in the wire between the transmission range switch and the PCM. If the PCM
was updated, substitute a known-good PCM (see SUBSTITUTING THE
PCM ), then go to step 58. If the PCM was substituted, go to step 1. If the
HDS indicates NOT COMPLETED, go to step 58.

DTC P0706: Open in Transmission Range Switch Circuit

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Raise the front of the vehicle, make sure it is securely supported, and allow the

front wheels to rotate freely. Or raise the vehicle on a lift.

4. Start the engine, run the vehicle with the shift lever in D until the vehicle speed

reaches 25 mph (40 km/h), then slow down and stop the wheels.

NOTE:

Before you troubleshoot, record all freeze data and any
on-board snapshot with the HDS, and review General
Troubleshooting Information (see GENERAL
TROUBLESHOOTING INFORMATION ).

This code is caused by an electrical circuit problem and
cannot be caused by a mechanical problem in the
transmission.

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

5. Turn the ignition switch to LOCK (0). Repeat the test-drive in step 4, then go

to step 6.

6. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES -Go to step 7.

NO -If the HDS indicates PASSED, intermittent failure, the system is OK at
this time. Check for poor connections or loose terminals between the
transmission range switch and the PCM. If the HDS indicates NOT
COMPLETED, go to step

4

.

7. Turn the ignition switch to LOCK (0).
8. Inspect the transmission range switch (see TRANSMISSION RANGE

SWITCH TEST ).

Is the switch OK?

YES -Go to step 9.

NO -Replace the transmission range switch (see TRANSMISSION RANGE
SWITCH REPLACEMENT ), then go to step 30.

9. Adjust the shift cable (see SHIFT CABLE ADJUSTMENT ).

10. Turn the ignition switch to ON (II).
11. Clear the DTC with the HDS.
12. Start the engine, run the vehicle with the shift lever in D until the vehicle speed

reaches 25 mph (40 km/h), then slow down and stop the wheels.

13. Turn the ignition switch to LOCK (0). Repeat the test-drive in step 12, then go

to step 14.

14. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.

Does the HDS indicate FAILED?

YES -Go to step 15.

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

NO -If the HDS indicates PASSED, intermittent failure, the system is OK at
this time. Check for poor connections or loose terminals between the
transmission range switch and the PCM. If the HDS indicates NOT
COMPLETED, go to step

12

.

15. Shift to D, and check the ATP FWD and ATP D in the DATA LIST with the

HDS.

Are ATP FWD and ATP D ON?

YES -Go to step 16.

NO -Go to step 22.

16. Shift to D3, and check the ATP FWD and ATP D3 in the DATA LIST with the

HDS.

Are ATP FWD and ATP D3 ON?

YES -Go to step 17.

NO -Go to step 22.

17. Shift to 2, and check the ATP FWD and ATP 2-1 in the DATA LIST with the

HDS.

Are ATP FWD and ATP 2-1 ON?

YES -Go to step 18.

NO -Go to step 22.

18. Clear the DTC with the HDS.
19. Start the engine, run the vehicle with the shift lever in D until the vehicle speed

reaches 25 mph (40 km/h), then slow down and stop the wheels.

20. Turn the ignition switch to LOCK (0). Repeat the test-drive in step 19, then go

to step 21.

21. Monitor the OBD STATUS for P0706 in the DTCs MENU with the HDS.

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)