DTC P0864:00 [DJVA-EL]

id0502l1822800

DTC P0864:00

Grade sensor function malfunction
DETECTION CONDITION
•  Condition: TCM normal during engine rotation
•  Status: Detects no change in slope sensor value during deceleration
•  Period: Confirmed 16 times
Diagnostic support note
•  The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
•  PENDING CODE is not available.
•  The DTC is stored in the TCM memory.
POSSIBLE CAUSE
•  Grade sensor connector or terminal malfunction
•  Short to GND in wiring harness for oil grade sensor terminal C and TCM terminal A21
•  Short to GND in wiring harness for oil grade sensor terminal B and TCM terminal A22
•  Short to GND in wiring harness for oil grade sensor terminal A and TCM terminal A13
•  Short to power supply in wiring harness for grade sensor terminal C and TCM terminal A21
•  Short to power supply in wiring harness for grade sensor terminal B and TCM terminal A22
•  Short to power supply in wiring harness for grade sensor terminal A and TCM terminal A13
•  Oil pressure sensor malfunction
•  TCM connector or terminal malfunction
•  Open circuit in wiring harness for grade sensor terminal C and TCM terminal A21
•  Open circuit in wiring harness for grade sensor terminal B and TCM terminal A22
•  Open circuit in wiring harness for grade sensor terminal A and TCM terminal A13
•  TCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
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.
2
INSPECT GRADE SENSOR CONNECTOR FOR POOR CONNECTION
•  Switch the ignition to OFF.
•  Disconnect the grade sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
3
INSPECT GRADE SENSOR CIRCUIT FOR SHORT TO GND
•  Switch the ignition to OFF.
•  Inspect for continuity between the following circuits:
―  Grade sensor terminal C (wiring harness-side) and body GND
―  Grade sensor terminal B (wiring harness-side) and body GND
―  Grade sensor terminal A (wiring harness-side) and body GND
•  Is the voltage B+?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
No
Go to the next step.
4
INSPECT GRADE SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition to ON. (engine off).
•  Measure the voltage between the following circuits:
―  Grade sensor terminal C (wiring harness-side) and body GND
―  Grade sensor terminal B (wiring harness-side) and body GND
―  Grade sensor terminal A (wiring harness-side) and body GND
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to GND, then go to Step 8.
No
Go to the next step.
5
INSPECT GRADE SENSOR
•  Inspect the grade sensor
•  Is there any malfunction?
Yes
Perform the following procedure, then go to Step 8.
1.  Replace the grade sensor.
2.  Perform grade sensor learning.
No
Go to the next step.
6
INSPECT TCM CONNECTOR FOR POOR CONNECTION
•  Switch the ignition to OFF.
•  Disconnect the TCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
7
INSPECT GRADE SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Switch the ignition to OFF.
•  Inspect for continuity between the following circuits:
―  Grade sensor terminal C (wiring harness-side) and TCM terminal A21 (wiring harness-side)
―  Grade sensor terminal B (wiring harness-side) and TCM terminal A22 (wiring harness-side)
―  Grade sensor terminal A (wiring harness-side) and TCM terminal A13 (wiring harness-side)
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
No
Go to the next step.
8
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all the disconnected connectors.
•  Clear the DTC using the M-MDS.
•  Perform the following procedure to ensure that the DTC has been resolved:
1.  Start the engine.
2.  Vehicle driven at 30 km/h or more, and then decelerated by depressing brake pedal.
3.  Repeat Procedure 2.) 16 times
•  Is the same DTC present?
Yes
Perform the following procedure, then go to next step.
1.  Replace the TCM.
2.  Perform TCM learning.
No
Go to the next step.
9
VERIFY NO DTCs ARE PRESENT
•  Perform the “Reading DTCs Procedure”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [DJVA-EL].)
No
DTC troubleshooting completed.