Acura TSX / Honda Accord CL. Manual — part 974

Fig. 174: Measuring A/T Clutch Pressure Control Solenoid Valve A Resistance At The
Solenoid Connector

9. Check for continuity between A/T clutch pressure control solenoid valve A connector terminal No. 2 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
symptom/indication goes away with a known-good PCM, replace the original PCM.

NO: Repair open in the wire between the A/T clutch pressure control solenoid valve A and
ground (G101), or repair poor ground (G101), then go to step 12 .

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

Fig. 175: Checking For Continuity Between A/T Clutch Pressure Control Solenoid Valve A
Connector Terminal No. 2 & Body Ground

10. Clear the DTC with the HDS.

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

12. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0963.

Did the result indicate a pass?

YES: The problem has been corrected.

NO: Return to step 1 and recheck.

DTC P0966: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B CIRCUIT

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed

1. Clear the DTC with the HDS.

2. Check that DTC P0966 recurs.

Is DTC P0966 indicated?

YES: Go to step 6 .

NO: Go to step 3.

3. Select P CTRL SOL CONTROL in MISC. TEST MENU, then select P. CONTROL SOL B in P CTRL

SOL CTRL MENU with the HDS.

4. Drive with the A/T clutch pressure control solenoid valve B at 1.0 A in SOL B CONTROL menu.

5. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0966.

Did the result indicate a fail?

YES: Go to step 6.

NO: Intermittent failure, the system is OK at this time. Check for poor connections and loose
terminals at the A/T clutch pressure control solenoid valve B and PCM. If the tester indicates
NOT COMPLETE, return to step 3 and recheck.

6. Turn the ignition switch OFF.

7. Disconnect the A/T clutch pressure control solenoid valve B connector.

8. Measure A/T clutch pressure control solenoid valve B resistance at the solenoid connector.

Is there 3-10 ohm?

YES: Go to step 9.

NO: Replace the A/T clutch pressure control solenoid valve B (see A/T CLUTCH
PRESSURE CONTROL SOLENOID VALVE B & C REPLACEMENT ), then go to
step 12 .

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. 176: Measuring A/T Clutch Pressure Control Solenoid Valve B Resistance At The
Solenoid Connector

9. Check for continuity between A/T clutch pressure control solenoid valve B connector terminal No. 2 and

body ground.

Is there continuity?

YES: Go to step 10.

NO: Repair open in the wire between the A/T clutch pressure control solenoid valve B and
ground (G101), or repair poor ground (G101), then go to step 12 .

2004 Acura TSX

2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed