A/T, Engine Controls - MIL ON/DTC P0715 Set
01-012May 15, 2001
Applies To:
1996-97 Accord L4 - ALL with A/T
1996-97 Odyssey - ALL
MIL Comes On With A/T DTC P0715
PROBLEM
The MIL comes on, and A/T DTC P0715 (problem in the mainshaft speed sensor circuit) is set.
CORRECTIVE ACTION
Retrieve and record the A/T freeze data with the PGM Tester. Make sure you record the freeze data values on the repair order. Refer to DIAGNOSIS to determine which of these repair actions is needed:
^ Replace the PCM
^ Flush the A/T
^ Replace the A/T
^ Troubleshoot the mainshaft speed sensor circuit
^ Troubleshoot an engine problem
PARTS INFORMATION
REQUIRED MATERIALS
WARRANTY CLAIM INFORMATION
In warranty: The normal warranty applies.
Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.
DIAGNOSIS
1. Connect the PGM Tester to the 16P data link connector (DLC).
2. Turn the ignition switch ON (II).
3. From the SYSTEM SELECT screen, select AUTOMATIC TRANSMISSION.
4. From the TEST MODE MENU screen, select FREEZE DATA.
5. Read and record the freeze data values. (See the examples of PGM Tester displays.) Make sure you record the actual freeze data values on the repair order.
^ If the mainshaft speed value is lower than the countershaft speed and VSS values, as shown, and you have these conditions:
- TP sensor value is off idle (more than 0.5 volts, more than 1%, or more than -2°, depending on the unit of measure),
- ECT value is about 140°F
- VSS value is between 20 to 40 mph, and
- Shift signal is 3rd gear go to REPAIR PROCEDURE A.
^ If the mainshaft speed value is lower than the countershaft speed and VSS values, but one or more of the values in the conditions listed above are outside the parameters, clear the DTC with the PGM Tester, then flush the A/T (see REPAIR PROCEDURE B, Flushing the A/T). If the DTC comes back, replace the A/T with a remanufactured unit (see S/B 98-061, Automatic Transmission In-Warranty Exchange Program, filed under Transmission/Driveline).
^ If the mainshaft speed value is higher than the countershaft speed and VSS values, as shown, go to REPAIR PROCEDURE B.
^ If the mainshaft speed value is zero, as shown, check the sensor connectors and terminals for a good fit and for a short or open in the wiring. Do the mainshaft speed sensor troubleshooting in the Transmission section of the appropriate service manual.
^ If the engine speed value is zero, and the countershaft speed and VSS values are identical, as shown, ask your customer if the engine has ever stalled while driving. If it has, the problem may be engine-related, not A/T-related. Continue with normal troubleshooting procedures.
REPAIR PROCEDURE A
Replace the PCM. Refer to the chart in PARTS INFORMATION to select the correct replacement. When you remove the PCM, find its part number in the chart, and order the part number in the far right column. For Accord L4 models only, the chart includes replacement PCMs listed in S/B 98-040, Diagnostic Trouble Code P0740, filed under Transmission/Driveline. One of those PCMs may have been previously installed.
REPAIR PROCEDURE B
Accord L4
1. Drain the ATF
2. Loosen the 11 bolts for the A/T right side cover, and slide back the cover.
3. Look at the 4th clutch feed pipe inside the cover.
Is the bushing for the feed pipe visible?
YES - Replace the A/T with a remanufactured unit (see S/B 98-061, Automatic Transmission In-Warranty Exchange Program, filed under Transmission/Driveline. (The feed pipe bushing should stay stationary inside the mainshaft.)
NO - Reinstall the cover, and torque the bolts to 12 Nm (8.7 lb-ft). Clear the DTC with the PGM Tester, and flush the A/T (see Flushing the A/T). If the DTC comes back, replace the A/T with a remanufactured unit (see S/B 98-061, Automatic Transmission In-Warranty Exchange Program, filed under Transmission/Driveline).
Odyssey
Clear the DTC with the PGM Tester, then flush the A/T (see Flushing the A/T). If the DTC comes back, replace the A/T with a remanufactured unit (see S/B 98-061, Automatic Transmission In-Warranty Exchange Program, filed under Transmission/Driveline).
Flushing the A/T
1. Raise the vehicle on a lift.
2. Drain the ATF
3. Refill the A/T with Honda ATF-Z1.
4. Start the engine.
5. Press the brake pedal, move the shift lever to D4, and release the brake pedal.
6. Press the accelerator pedal so the speedometer reads 50 mph. Make sure the A/T shifts through the first three lower gears and into 4th gear and the torque converter locks up. Release the accelerator pedal.
7. Press the brake pedal to stop the front wheels.
8. Move the shift lever to R, and then to N. Release the brake pedal.
9. Repeat the shifting procedure (steps 5 through 8) four more times.
10. Turn off the engine.
11. Drain the ATF
12. Repeat steps 3 through 11 two more times.
13. Reinstall the drain plug with a new sealing washer.
14. Refill the A/T with Honda ATF-Z1.
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