Acura TSX / Honda Accord CL. Manual — part 977
pressure control solenoid valve C, then go to step 12.
Fig. 183: Measuring The Voltage Between A/T Clutch Pressure Control Solenoid Valve C
Connector Terminals No. 1 & No. 2
12. Clear the DTC with the HDS.
13. Test-drive the vehicle for several minutes in the D position in all five gears.
14. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0970.
Did the result indicate a pass?
YES: The problem has been corrected.
NO: Return to step 1 and recheck.
DTC P0971: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C
2004 Acura TSX
2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed
1. Clear the DTC with the HDS.
2. Check that DTC P0971 recurs.
Is DTC P0971 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 C in P CTRL
SOL CTRL MENU with the HDS.
4. Drive with the A/T clutch pressure control solenoid valve C at 0.2 A in SOL C CONTROL menu.
5. Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0971.
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 or loose
terminals at the A/T clutch pressure control solenoid valve C 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 C connector.
8. Measure A/T clutch pressure control solenoid valve C 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 C (see A/T CLUTCH
PRESSURE CONTROL SOLENOID VALVE B & C REPLACEMENT ), then go to
step 10 .
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. 184: Measuring A/T Clutch Pressure Control Solenoid Valve C Resistance At The
Solenoid Connector
9. Check for continuity between A/T clutch pressure control solenoid valve C 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 C and
ground (G101), or repair poor ground (G101), then go to step 10.
2004 Acura TSX
2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed
Fig. 185: Checking For Continuity Between A/T Clutch Pressure Control Solenoid Valve C
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 P0971.
Did the result indicate a pass?
YES: The problem has been corrected.
NO: Return to step 1 1 and recheck.
2004 Acura TSX
2004 AUTOMATIC TRANSMISSIONS Diagnosis - MCTA 5-Speed
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