DTC P085D-582: Gear Shift Control Module "A" Performance; DTC P085D-599: Gear Shift Control Module "A" Performance; DTC P0861-597: Gear Shift Control Module "A" Communication Circuit Low; DTC P0862-598: Gear Shift Control Module "A" Communication Circuit High: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Chassis / Transmission Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   Electronic shift lever system DTCs are not output.	A
   Any of the following DTCs are output.	B

   DTC No.	Relevant Diagnosis
   C2309	Open in B+ Circuit
   C2311	Communication Error from HV ECU

5. Turn the power switch off.

B → See step   8 

A: Go to next step 

1. Disconnect connector A22 from the power management control ECU.
2. Disconnect connector A24 from the transmission control ECU assembly.
3. Turn the power switch on (IG).
4. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying A22 And A24 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A24-22 (PCON) - Body ground	Power switch on (IG)	Below 1 V
   A24-23 (PPOS) - Body ground	Power switch on (IG)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Rear view of wire harness connector (to Power Management Control ECU)
   *2	Front view of wire harness connector (to Transmission Control ECU Assembly)

   NOTE:

   Turning the power switch on (IG) with the power management control ECU connectors disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

5. Turn the power switch off.
6. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for open)

   Tester Connection	Switch Condition	Specified Condition
   A22-22 (PCON) - A24-22 (PCON)	Power switch off	Below 1 Ω
   A22-28 (PPOS) - A24-23 (PPOS)	Power switch off	Below 1 Ω

   Standard Resistance (Check for short)

   Tester Connection	Switch Condition	Specified Condition
   A22-22 (PCON) or A24-22 (PCON) - Body ground and other terminals	Power switch off	10 kΩ or higher
   A22-28 (PPOS) or A24-23 (PPOS) - Body ground and other terminals	Power switch off	10 kΩ or higher

7. Connect the transmission control ECU assembly connector.
8. Connect the power management control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Turn the power switch on (IG).
2. Connect an oscilloscope between the power management control ECU terminals specified in the table below, and measure the waveform.
   Fig 2: Check Power Management Control ECU (Pcon Signal)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Content
   Terminal	A22-22 (PCON) - L5-6 (E1)
   Equipment Setting	10V/DIV., 10ms/DIV.
   Condition	Power switch on (IG)

   Result

   Result	Proceed to
   P position control (PCON) signal waveform appears.	A
   P position control (PCON) signal waveform does not appear.	B

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Power Management Control ECU)

3. Turn the power switch off.

B → See step   10 

A: Go to next step 

1. Turn the power switch on (IG).
2. Connect an oscilloscope between the power management control ECU terminals specified in the table below, and measure the waveform.
   Fig 3: Identifying Power Management Control ECU And Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Item	Content
   Terminal	A22-28 (PPOS) - L5-6 (E1)
   Equipment Setting	10V/DIV., 10ms/DIV.
   Condition	Power switch on (IG)

   Result

   Result	Proceed to
   P position (PPOS) signal waveform appears	A
   P position (PPOS) signal waveform does not appear	B

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Power Management Control ECU)

3. Turn the power switch off.

B → See step   9 

A: Go to next step 

1. Replace the power management control ECU. Refer to COMPONENTS .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Read and record the DTCs and freeze frame data.
5. Clear DTCs and freeze frame data.
6. Turn the power switch off.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG) and leave the vehicle as it is for 10 seconds.
3. Depress the brake pedal, move the shift lever to N and leave the vehicle as it is for 10 seconds.
4. Push the P position switch (transmission shift main switch) and leave the vehicle as it is for 10 seconds.
5. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
6. Check if DTCs are output.

   Result

   Result	Proceed to
   No DTCs are output.	A
   P085D-582, P085D-599, P0861-597 or P0862-598 is output again.	B

7. Turn the power switch off.

B → See step   9 

A → COMPLETED