DTC P1753-87: Lost Communication with Gear Shift Control Module "B" (Local-CAN) Missing Message [11/2021 - ]: Procedure

Pre-procedure1

1. Disconnect the D39 transmission floor shift assembly (shift control ECU) connector.
2. Disconnect the B79 shift control actuator assembly (shift actuator ECU) connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D39-24 (CA4H) - B79-4 (CA4H)	Always	Below 1 Ω
   D39-10 (CA4L) - B79-3 (CA4L)	Always	Below 1 Ω
   D39-24 (CA4H) or B79-4 (CA4H) - Body ground and other terminals	Always	10 kΩ or higher
   D39-10 (CA4L) or B79-3 (CA4L) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. Connect the shift control actuator assembly (shift actuator ECU) connector.
5. Connect the transmission floor shift assembly (shift control ECU) connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

Pre-procedure1

1. Disconnect the D39 transmission floor shift assembly (shift control ECU) connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D39-24 (CA4H) - D39-10 (CA4L)	Ignition switch off	108 to 132 Ω

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. Connect the transmission floor shift assembly (shift control ECU) connector.

Result: 

OK 

REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU). Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU). Refer to  REMOVAL [11/2021 - ]