AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P08CD

DTC Code DTC Name
P08CD Shift Solenoid "J" Performance/Stuck Off

DESCRIPTION

Based on signals from the transmission revolution sensors (NT and SP2), the actual gear is detected.

If the detected gear is different than the commanded gear, the TCM detects related mechanical problems in the shift solenoid valves, transmission valve body assembly and automatic transmission assembly (clutch, brake, gear, etc.).

Tech Tips

Actual gear when a malfunction occurs in shift solenoid valve SC2 (without fail-safe control):

TCM commanded gear 1st 2nd 3rd 4th 5th 6th 7th 8th
Actual gear during SC2 stuck OFF malfunction

1st

(5th)*

 2nd 3rd 4th 5th 6th 7th 8th

  • *: Shift lever in S with the S1 (1st gear) range selected

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P08CD

  1. Battery voltage is 9.5 V or higher, engine speed is more than 400 rpm, and the vehicle is driven with the shift lever in S (no malfunctions are detected in shift solenoid valve SC1, SC2, SL1, SL2, SL3, SL4, SL5, SLT, SLU, park/neutral position switch assembly, TCM, electronic throttle, knock control sensor, No. 1 ATF temperature sensor, transmission revolution sensors (NT), and CAN communication system)

  2. When gear shifts to 1st (S1 range) are requested by TCM, actual gear changes to 5th gear.

  3. Malfunction status is detected 5 times per trip

  4. 2-trip detection logic

  • Shift solenoid valve SC1

  • Shift solenoid valve SC2

  • Transmission valve body assembly

  • Automatic transmission assembly (clutch, brake, gear, etc.)

MONITOR DESCRIPTION

This DTC indicates a "stuck OFF" malfunction of shift solenoid valve SC2.

The TCM commands gear shifts by turning the shift solenoid valves on or off. When the gear position commanded by the TCM and the actual gear position are not the same, the TCM illuminates the MIL* and stores the DTC.


CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced Click here.

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. While driving the vehicle, move the shift lever to S, select the S1 (1st gear) range and perform an engine brake test Click here.*1

  2. Turn the engine switch off.

  3. Perform step (*1) again.

  4. Check for DTCs again Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (IN ADDITION TO DTC P08CD)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / ECT / Trouble Codes.

    5. Read the DTCs using the GTS.

      Result
      Result Proceed to
      DTC P08CD and DTC P0746, P076B, P076C, P0776, P0796, P08CE, P2714, P2808 and/or P2817 are output A
      Only DTC P08CD is output
      DTCs other than P0746, P076B, P076C, P0776, P0796, P08CD, P08CE, P2714, P2808 and P2817 are also output B

      Tech Tips

      If DTCs other than P0746, P076B, P076C, P0776, P0796, P08CD, P08CE, P2714, P2808 and P2817 are output, perform troubleshooting for those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. INSPECT SHIFT SOLENOID VALVE SC1 AND SC2


    1. A01WVD4E02
      Text in Illustration
      *1 Shift Solenoid Valve SC1
      *2 Shift Solenoid Valve SC2

      Remove the shift solenoid valve SC1 and SC2 Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal of shift solenoid valve SC1 connector - Shift solenoid valve SC1 body 20°C (68°F) 11 to 15 Ω
      Terminal of shift solenoid valve SC2 connector - Shift solenoid valve SC2 body 20°C (68°F) 11 to 15 Ω

    3. Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.

      OK
      Measurement Condition Specified Condition

      • Battery positive (+) → Shift solenoid valve connector

      • Battery negative (-) → Shift solenoid valve body

      		 Valve moves and makes an operating noise

    NG

    REPLACE SHIFT SOLENOID VALVE SC1 OR SC2 Click here

    OK

  3. INSPECT TRANSMISSION VALVE BODY ASSEMBLY


    1. Check the transmission valve body assembly Click here.

      OK
      There is no foreign matter on each valve and they operate smoothly.

    OK

    REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY Click here

    NG

    REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY Click here