Honda Civic. Manual — part 191

37. 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 ).

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

reaches 30 mph (48 km/h), then slow down and stop the wheels.

39. Turn the ignition switch to LOCK (0). Repeat the test-drive in step 38, then go

to step 40.

40. Check for DTCs with the HDS.

Is DTC P0706 indicated?

YES -Check for poor connections or loose terminals 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 38. If the PCM was
substituted, go to step 1.

NO -Go to step 41.

41. Monitor the OBD STATUS for P0706 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 40, go to the INDICATED DTC'S
TROUBLESHOOTING.

NO -If the HDS indicates FAILED, check for poor connections or loose
terminals 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 38. If the PCM was substituted, go to step 1. If the HDS
indicates NOT COMPLETED, go to step 38.

DTC P0711: Problem in ATF Temperature Sensor Circuit

NOTE:

Before you troubleshoot, record all freeze data and any

2008 Honda Civic LX

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

1. Turn the ignition switch to ON (II).
2. Check the ATF TEMP SENSOR in the DATA LIST with the HDS.

Does the ATF temperature exceed the ambient air temperature?

YES -Record the ATF temperature. Leave the engine off for at least 30
minutes, then go to step 3.

NO -Record the ATF temperature. Test the stall speed RPM (see STALL
SPEED TEST ) three times, then go to step 3.

3. Check the ATF TEMP SENSOR in the DATA LIST with the HDS.

Did the ATF temperature change?

YES -Leave the engine off for at least 30 minutes, then go to step 4.

NO -Replace the ATF temperature sensor (see ATF TEMPERATURE
SENSOR TEST/REPLACEMENT ), then go to step 6.

4. Check the ECT SENSOR in the DATA LIST with the HDS.

Does the ECT SENSOR read about the same as the ambient air temperature?

YES -Go to step 5.

NO -Leave the engine off until ECT SENSOR reads the same as the ambient
air temperature, then go to step 5.

5. Check the ATF TEMP SENSOR in the DATA LIST with the HDS.

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)

Does the ATF temperature read about the same as ECT SENSOR?

YES -Go to step 12.

NO -Replace the ATF temperature sensor (see ATF TEMPERATURE
SENSOR TEST/REPLACEMENT ), then go to step 6.

6. Clear the DTC with the HDS.
7. Start the engine, and warm it up to normal operating temperature (the radiator

fan comes on).

8. Allow the engine coolant temperature to cool to the ambient air temperature.
9. Start the engine, and warm it up to normal operating temperature (the radiator

fan comes on), and wait for at least 20 seconds, then drive the vehicle at speeds
over 19 mph (31 km/h) for at least 5 minutes.

10. Check for DTCs with the HDS.

Is DTC P0711 indicated?

YES -Check for poor connections or loose terminals between the ATF
temperature sensor and the PCM, then go to step 1.

NO -Go to step 11.

11. Monitor the OBD STATUS for P0711 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

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

NO -If the HDS indicates FAILED, check for poor connections or loose
terminals between the ATF temperature sensor and the PCM, then go to step 1.
If the HDS indicates NOT COMPLETED, go to step 7.

12. 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 ).

2008 Honda Civic LX

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

13. Start the engine, and warm it up to normal operating temperature (the radiator

fan comes on).

14. Allow the engine coolant temperature to cool to the ambient air temperature.
15. Start the engine, and warm it up to normal operating temperature (the radiator

fan comes on), and wait for at least 20 seconds, then drive the vehicle at speeds
over 19 mph (31 km/h) for at least 5 minutes.

16. Check for DTCs with the HDS.

Is DTC P0711 indicated?

YES -Check for poor connections or loose terminals between the ATF
temperature sensor and the PCM. If the PCM was updated, substitute a known-
good PCM (see SUBSTITUTING THE PCM ), then go to step 13. If the
PCM was substituted, go to step 1.

NO -Go to step 17.

17. Monitor the OBD STATUS for P0711 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 16, go to the INDICATED DTC'S
TROUBLESHOOTING.

NO -If the HDS indicates FAILED, check for poor connections or loose
terminals between the ATF temperature sensor and the PCM. If the PCM was
updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ),
then go to step 13. If the PCM was substituted, go to step 1. If the HDS
indicates NOT COMPLETED, go to step 13.

DTC P0712: Short in ATF Temperature Sensor Circuit

NOTE:

Before you troubleshoot, record all freeze data and any
on-board snapshot with the HDS, and review General

2008 Honda Civic LX

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