Acura RL. Instruction — page 234

Fig. 81: Checking Continuity Between PCM Connector Terminal C10 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair short in the wire between PCM connector terminal C10 and the transmission range switch,
then go to step 45.

NO — Go to step 39.

29. Measure the voltage between PCM connector terminals G18 and A3 or B15, in all positions other than

D3.

Fig. 82: Measuring Voltage Between PCM Connector Terminals G18 And A3 Or B15
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Go to step 34.

NO — Go to step 30.

30. Turn the ignition switch to LOCK (0).

31. Jump the SCS line with the HDS.

32. Disconnect PCM connector C (22P).

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33. Check for continuity between PCM connector terminal C18 and body ground.

Fig. 83: Checking Continuity Between PCM Connector Terminal C18 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair short in the wire between PCM connector terminal C18 and the transmission range switch,
then go to step 45.

NO — Go to step 39.

34. Measure the voltage between PCM connector terminals C19 and A3 or B15, in all positions other than D

and D3.

Fig. 84: Measuring Voltage Between PCM Connector Terminals C19 And A3 Or B15
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES — Go to step 40.

NO — Go to step 35.

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35. Turn the ignition switch to LOCK (0).

36. Jump the SCS line with the HDS:

37. Disconnect PCM connector C (22P).

38. Check for continuity between PCM connector terminal C19 and body ground.

Fig. 85: Checking Continuity Between PCM Connector Terminal C19 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES — Repair short in the wire between PCM connector terminal C19 and the transmission range switch,
then go to step 45.

NO — Go to step 39.

39. Reconnect all connectors.

40. Update the A/T software in the PCM if it does not have the latest software (see UPDATING THE

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

41. Start the engine.

42. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each

position.

43. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.

Is DTC P0705 indicated?

YES — If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ),
then recheck. If the PCM was substituted, go to step 1.

NO — Go to step 44.

44. Monitor the OBD STATUS for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

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YES — If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the
original PCM (see PCM REPLACEMENT ). If any other DTCs were indicated on step 43, go to the
INDICATED DTC’S TROUBLESHOOTING.

NO — Check for poor connections and loose terminals at the transmission range switch and the PCM. If
the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck.
If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, return to step 40 and
recheck.

45. Clear the DTC with the HDS.

46. Start the engine.

47. With the brake pedal pressed, move the shift lever through all positions. Stop for at least 1 second in each

position.

48. Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.

Is DTC P0705 indicated?

YES — Check for poor connections and loose terminals at the transmission range switch and the PCM,
then return to step 47 and recheck.

NO — Go to step 49.

49. Monitor the OBD STATUS for P0705 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the HDS indicate PASSED?

YES — Troubleshooting is complete. If any other DTCs were indicated on step 48, go to the INDICATED
DTC’S TROUBLESHOOTING
.

NO — Check for poor connections and loose terminals at the transmission range switch and the PCM, then
go to step 1. If the HDS indicates NOT COMPLETED, return to step 46 and recheck.

DTC P0706: Open in Transmission Range Switch Circuit

1. Clear the DTC with the HDS.

2. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.

3. Start the engine, and turn the VSA off (the light on the VSA OFF switch comes on). Run the engine in D

until the vehicle speed reaches 25 mph (40 km/h), then slow down, stop the wheels, and turn the ignition
switch to LOCK (0).

NOTE:

Before you troubleshoot, record all freeze data and any on-board
snapshot, 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.

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