DTC P0974 [AW6AX-EL]

id0502j6803500

DTC P0974

Shift solenoid A circuit malfunction (short to power/open circuit)
DETECTION CONDITION
•  Open or short circuit in shift solenoid A signal system (The solenoid remains on continuously for 100 ms or more even if the TCM sends a solenoid off command).
Diagnostic support note:
•  This is continuous monitor (CCM).
•  The MIL illuminates if the TCM detects the above malfunction condition during first drive cycle.
•  A PENDING CODE is not available.
•  FREEZE FRAME DATA is available.
•  The AT warning light illuminates.
•  The DTC is stored in the TCM memory.
POSSIBLE CAUSE
•  Open circuit in wiring harness between shift solenoid A terminal A and TCM terminal B5
•  Short to power in wiring harness between shift solenoid A terminal A and TCM terminal B5
•  Shift solenoid A malfunction
•  Damaged connector between shift solenoid A and TCM
•  TCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT TERMINAL COUPLE COMPONENT FOR POOR CONNECTION
•  Turn the ignition switch to the LOCK position.
•  Remove the TCM.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Are terminals normal?
Yes
Go to the next step.
No
Replace the couple component, then go to Step 8.
4
INSPECT RESISTANCE OF SHIFT SOLENOID A CIRCUIT
•  Inspect for resistance between couple component terminal B5 (wiring harness-side) and ground.
•  Is resistance within 11—15 ohms?
Yes
Go to go to Step 8.
No
Go to the next step.
5
INSPECT TERMINAL SHIFT SOLENOID A FOR POOR CONNECTION
•  Disconnect the shift solenoid A connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Are terminals normal?
Yes
Go to the next step.
No
Replace the couple component, then go to Step 8.
6
INSPECT TERMINAL COUPLE COMPONENT CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between couple component terminal B5 (wiring harness-side) and shift solenoid A terminal A wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the couple component, then go to Step 8.
7
INSPECT TERMINAL COUPLE COMPONENT CIRCUIT FOR SHORT TO POWER
•  Inspect for continuity between couple component terminal B5 and all terminals except B5 (wiring harness-side).
•  Is there continuity?
Yes
Repair or replace the couple component, then go to the next step.
No
Replace the control valve body, then go to the next step.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [AW6AX-EL].)
8
VERIFY TROUBLESHOOTING OF DTC P0974 COMPLETED
•  Make sure to reconnect all the disconnected connectors.
•  Clear the DTC from the memory using the M-MDS.
•  Drive the vehicle in D range and make sure that gears shift smoothly from 1GR to 6GR.
•  Is the same DTC present?
Yes
Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION [AW6AX-EL].)
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [AW6AX-EL].)
No
DTC troubleshooting completed.