CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 1ZR-FAE), Diagnostic DTC:P099B and P099C

DTC Code DTC Name
P099B Shift Solenoid "G" Control Circuit Low (Shift Solenoid Valve SC)
P099C Shift Solenoid "G" Control Circuit High (Shift Solenoid Valve SC)

DESCRIPTION

Based on the signal received by the shift solenoid valve SC, the ECM uses the shift solenoid valve SLU to control the forward and reverse clutch pressure.

If there is an open or short in the shift solenoid valve SC circuit, the ECM stops sending current to the malfunctioning shift solenoid valve.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P099B

Shift Solenoid "G" Control Circuit Low (Shift Solenoid Valve SC)

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  1. The vehicle is being driven.

  2. There is a short in the shift solenoid valve SC circuit.

  3. 3 seconds

  4. 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve SC)

  • ECM

Comes on

DTC stored

P099C

Shift Solenoid "G" Control Circuit High (Shift Solenoid Valve SC)

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  1. The vehicle is being driven.

  2. There is an open in the shift solenoid valve SC circuit.

  3. 0.5 seconds

  4. 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve SC)

  • ECM

Comes on

DTC stored

MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid valve SC circuit. If there is an open or short in the shift solenoid valve SC circuit, the ECM detects the malfunction, illuminates the MIL and stores a DTC.

WIRING DIAGRAM

C319937E15

CAUTION / NOTICE / HINT

Tip:

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

  1. Drive the vehicle and confirm the lock-up on and off conditions according to Road Test.

    Click here

  2. Check for DTCs again.

    Click here

PROCEDURE

  1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SC)

    1. C264597C08

      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the B185 transmission wire connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      9 (SC) - Body ground

      20°C (68°F)

      11 to 15 Ω

    3. Connect the B185 transmission wire connector.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLYClick here

    OK

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

    1. Disconnect the B186 ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B186-41 (SC) - Body ground

      20°C (68°F)

      11 to 15 Ω

    3. Connect the B186 ECM connector.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

    OK

  3. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here

  4. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

    1. Replace the continuously variable transaxle assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here