Acura TSX / Honda Accord CL. Manual — part 948

DTC P0712: SHORT IN ATF TEMPERATURE SENSOR CIRCUIT

1. Check ATF temperature sensor voltage with the HDS in the A/T data list.

Is ATF temperature sensor voltage 0.07 V or less?

YES: Go to step 2.

NO: Intermittent failure, the system is OK at this time. Check for intermittent short in the
wires between the ATF temperature sensor and PCM.

2. Disconnect the shift solenoid harness connector at the shift solenoid valve cover.

3. Check ATF temperature sensor voltage with the HDS.

Is ATF temperature sensor voltage 0.07 V or less?

YES: Go to step 4.

NO: Check for a short to ground in the shift solenoid harness wire in the transmission (see
ATF TEMPERATURE SENSOR TEST & REPLACEMENT ). If the wire is OK, replace
ATF temperature sensor (see ATF TEMPERATURE SENSOR TEST &
REPLACEMENT ), then go to step 8 .

4. Turn the ignition switch OFF.

5. Jump the SCS line with the HDS.

6. Disconnect PCM connector C (22P).

7. Check for continuity between the No. 6 terminal of the shift solenoid harness connector and body ground.

Is there continuity?

YES: Repair short to ground in the wire between PCM connector terminal C14 and the shift
solenoid harness connector, then go to step 8.

NO: Check for a short to ground in the shift solenoid harness wire in the transmission (see
ATF TEMPERATURE SENSOR TEST & REPLACEMENT ). If the wire is OK, update
the PCM if it does not have the latest software, or substitute a known-good PCM (see PCM
UPDATING & SUBSTITUTION FOR TESTING ), then recheck. If the
symptom/indication goes away with a known-good PCM, replace the original PCM.

NOTE:

z

Record all freeze data and review General Troubleshooting Information
(see GENERAL TROUBLESHOOTING INFORMATION ) before you
troubleshoot.

z

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

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

Fig. 106: Checking For Continuity Between The No. 6 Terminal Of The Shift Solenoid
Harness Connector & Body Ground

8. Clear the DTC with the HDS.

9. Test-drive the vehicle for several minutes in the D position in all five gears.

10. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0712.

Did the result indicate a pass?

YES: The problem has been corrected.

NO: Return to step 1 and recheck.

DTC P0713: OPEN IN ATF TEMPERATURE SENSOR CIRCUIT

NOTE:

z

Record all freeze data and review General Troubleshooting Information
(see GENERAL TROUBLESHOOTING INFORMATION ) before you
troubleshoot.

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

1. Check ATF temperature sensor voltage with the HDS in the A/T data list.

Does ATF temperature sensor voltage exceed 4.93 V?

YES: Go to step 2.

NO: Intermittent failure, the system is OK at this time. Check for poor connections or loose
terminals at the ATF temperature sensor and PCM.

2. Turn the ignition switch OFF.

3. Disconnect the shift solenoid harness connector.

4. Turn the ignition switch ON (II).

5. Measure the voltage between shift solenoid harness connector terminal No. 6 and body ground.

Is there about 5 V?

YES: Go to step 6.

NO: Go to step 7 .

z

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

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

Fig. 107: Measuring The Voltage Between Shift Solenoid Harness Connector Terminal No. 6
& Body Ground

6. Measure the voltage between shift solenoid harness connector terminals No. 6 and No. 7.

Is there about 5 V?

YES: Check the ATF temperature sensor and shift solenoid harness in the transmission
housing (see ATF TEMPERATURE SENSOR TEST & REPLACEMENT )

NO: Repair open in the wire between PCM connector terminal A23 and the shift solenoid
harness connector, then go to step 8 .

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed