Acura TSX / Honda Accord CL. Manual — part 979

Fig. 188: Measuring The Resistance Between PCM Connector Terminals C6 & A8 Or A9

11. Disconnect the shift solenoid harness connector at the transmission housing.

12. Measure the resistance between shift solenoid harness connector terminal No. 5 and body ground.

Is there 12-25 ohm?

YES: Repair open in the wire between PCM connector terminal C6 and the shift solenoid
harness connector, then go to step 13.

NO: Check shift solenoid valve A, and check for an open in the shift solenoid harness in the
transmission (see SHIFT SOLENOID VALVE TEST ). Replace shift solenoid valve A
and/or shift solenoid harness, then go to step 13.

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

Fig. 189: Measuring The Resistance Between Shift Solenoid Harness Connector Terminal No.
5 & Body Ground

13. Clear the DTC with the HDS.

14. Start the engine in the P position

15. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0974.

Did the result indicate a pass?

YES: The problem has been corrected.

NO: Return to step 1 and recheck.

DTC P0976: SHORT IN SHIFT SOLENOID VALVE B CIRCUIT

NOTE:

z

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

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

1. Clear the DTC with the HDS.

2. Start the engine in the P position.

3. Check that DTC P0976 recurs.

Is DTC P0976 indicated?

YES: Go to step 7 .

NO: Go to step 4.

4. Select SHIFT SOL TEST in MISC. TEST MENU, then carry out A/T SHIFT SOL B test in SHIFT SOL

TEST MENU with the HDS.

5. Start the engine in the P position.

6. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0976.

Did the result indicate a fail?

YES: Go to step 7.

NO: Intermittent failure, the system is OK at this time. Check the GRN/WHT wire for an
intermittent short to ground between the shift solenoid valve B and PCM. If the tester
indicates NOT COMPLETE, return to step 4 and recheck.

7. Turn the ignition switch OFF.

8. Jump the SCS line with the HDS.

9. Disconnect PCM connectors A (31P) and C (22P).

10. Measure the resistance between PCM connector terminals C4 and A8 or A9.

Is there less than 12 ohm?

YES: Go to step 11.

NO: 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.

troubleshoot.

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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. 190: Measuring The Resistance Between PCM Connector Terminals C4 & A8 Or A9

11. Disconnect the shift solenoid harness connector at the transmission housing.

12. Check for continuity between PCM connector terminals C4 and A8 or A9.

Is there continuity?

YES: Repair short to ground in the wire between PCM connector terminal C4 and the shift
solenoid harness connector, then go to step 13.

NO: Check shift solenoid valve B, and check for a short in the shift solenoid harness in the
transmission (see SHIFT SOLENOID VALVE TEST ). Replace shift solenoid valve B
and/or shift solenoid harness, then go to step 13.

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed