Honda Civic. Manual — part 198

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Check for proper output shaft (countershaft) speed sensor installation (see

OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR
REPLACEMENT ).

4. 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.

5. Test-drive the vehicle with the shift lever in D and the engine speed 2,000 rpm

or higher, for at least 10 seconds. Slow down and stop the wheels.

6. Monitor the OBD STATUS for P0721 or P0722 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 output
shaft (countershaft) speed sensor and the PCM. If the HDS indicates NOT
COMPLETED, go to step 5.

7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (44P).

10. Check for continuity between PCM connector terminal C40 and body ground,

and between terminal C44 and body ground.

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)

Fig. 105: Checking Continuity Between PCM Connector Terminal C40
And C44 Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 11.

NO -Repair open in the wires between PCM connector terminals C40, C44,
and ground (G101) (see CONNECTOR TO HARNESS INDEX ), or repair a
poor ground (G101), then go to step 32.

11. Connect PCM connector C (44P).
12. Disconnect the output shaft (countershaft) speed sensor connector.
13. Turn the ignition switch to ON (II).
14. Measure the voltage between output shaft (countershaft) speed sensor

connector terminal No. 1 and body ground.

Fig. 106: Measuring Voltage Between Output Shaft (Countershaft) Speed
Sensor Connector Terminal 1 And Body Ground

2008 Honda Civic LX

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

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Go to step 18.

NO -Go to step 15.

15. Turn the ignition switch to LOCK (0).
16. Disconnect PCM connector C (44P).
17. Check for continuity between PCM connector terminal C13 and output shaft

(countershaft) speed sensor connector terminal No. 1.

Fig. 107: Checking Continuity Between PCM Connector Terminal C13
And Output Shaft (Countershaft) Speed Sensor Connector Terminal 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 18.

NO -Repair open in the wire between PCM connector terminal C13 and the
output shaft (countershaft) speed sensor, then go to step 32.

18. Turn the ignition switch to LOCK (0).
19. Disconnect PCM connector C (44P).
20. Check for continuity between output shaft (countershaft) speed sensor

connector terminal No. 2 and body ground.

2008 Honda Civic LX

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

Fig. 108: Checking Continuity Between Output Shaft (Countershaft)
Speed Sensor Connector Terminal 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair short to body ground in the wire between PCM connector
terminal C43 and the output shaft (countershaft) speed sensor, then go to step
32.

NO -Go to step 21.

21. Check for continuity between PCM connector terminal C14 and output shaft

(countershaft) speed sensor connector terminal No. 3.

Fig. 109: Checking Continuity Between PCM Connector Terminal C14
And Output Shaft (Countershaft) Speed Sensor Connector Terminal 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

2008 Honda Civic LX

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