MULTI-MODE MANUAL TRANSAXLE SYSTEM, Diagnostic DTC:P0821

DTC Code DTC Name
P0821 Gear Lever "X" Position Circuit

DESCRIPTION

Based on the signal from the transmission shift main switch, the TCM detects whether the shift lever is in E or M. If the shift lever position switch is ON despite the shift lever being in N or R, the TCM stores this DTC.

For more details of the transmission shift main switch, refer to DTC P0820.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Memory
P0821 Gear Lever "X" Position Circuit

The TCM detects the following conditions simultaneously for 1.0 second:

(1-trip detection logic)


  1. Shift lever is in N or R.

  2. MSDW signal is ON.

  • Shift lock control unit assembly

    (Transmission shift main switch)

  • Short in MDSW signal circuit

  • TCM

 Does not come on Comes on DTC stored

WIRING DIAGRAM

B0042NGE01
*a Shift Lock Control Unit Assembly (Transmission Shift Main Switch)

PROCEDURE


  1. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION SHIFT MAIN SWITCH)


    1. B0042ISC01
      *a

      Component without harness connected

      Shift Lock Control Unit Assembly

      (Transmission Shift Main Switch)

      Disconnect the shift lock control unit connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (MDSW) - 8 (GND) Shift lever in R, N or E 10 kΩ or higher
      Shift lever in M, "+" or "-" Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - TCM)


    1. Disconnect the TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E104-10 (MDSW) - E103-4 (MDSW) Always Below 1 Ω
      E104-10 (MDSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - BODY GROUND)


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E103-8 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TCM


    1. Replace the TCM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. PERFORM INITIALIZATION


    1. Perform the initialization and learning procedure.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END