Acura TSX / Honda Accord CL. Manual — part 942

Fig. 85: Circuit Diagram - PCM A/T Control System Wiring Diagram (2 Of 3)

Fig. 86: Circuit Diagram - PCM A/T Control System Wiring Diagram (3 Of 3)

DTC TROUBLESHOOTING

DTC P0705: SHORT IN TRANSMISSION RANGE SWITCH CIRCUIT (MULTIPLE SHIFT-
POSITION INPUT)

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

1. Clear the DTC with the HDS.

2. Start the engine.

3. Move the shift lever to each position, and check the OBD STATUS in DTCs MENU for a pass/fail test of

code P0705.

Did the result indicate a fail?

YES: Go to step 4.

NO: Intermittent failure, the system is OK at this time. Check for an intermittent short in the
wires between the transmission range switch and PCM. If the tester indicates NOT
COMPLETE, return to step 1 and recheck.

4. Test the transmission range switch (see TRANSMISSION RANGE SWITCH TEST ).

Is the switch OK?

YES: Go to step 5.

NO: Replace the transmission range switch, then go to step 49 .

5. Turn the ignition switch ON (II).

6. Shift to all positions other than P .

7. Measure the voltage between PCM connector terminals D6 and A8 or A9.

Is there about 5 V?

YES: Go to step 14 .

NO: Go to step 8.

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. 87: Measuring The Voltage Between PCM Connector Terminals D6 & A8 Or A9

8. Turn the ignition switch OFF.

9. Jump the SCS line with the HDS.

10. Disconnect PCM connector D (17P).

11. Check for continuity between PCM connector terminal D6 and body ground.

Is there continuity?

YES: Repair short in the wire between PCM connector terminal D6 and the transmission
range switch, then go to step 49 .

NO: Go to step 12.

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

Fig. 88: Checking For Continuity Between PCM Connector Terminal D6 & Body Ground

12. Disconnect PCM connector A (31P).

13. Check for continuity between PCM connector terminals A8 and body ground, and between A9 and body

ground.

Is there continuity?

YES: 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

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed