DTC P1753-87: Lost Communication with Gear Shift Control Module "B" (Local-CAN) Missing Message [10/2022 - ]: Procedure
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- CHECK DTC OUTPUT (HYBRID CONTROL)
Pre-procedure1
- Turn the ignition switch to ON.
- Check if DTCs are output.
Powertrain > Hybrid Control > Trouble Codes
Result
Result Proceed to P1753-87 and DTCs in the table below are output A None of the above conditions are met B Relevant DTC U0291-00 Lost Communication with Gear Shift Control Module "B" (System 2) Missing Message U0291-87 Lost Communication with Gear Shift Control Module "B" Missing Message
Post-procedure1
- Turn the ignition switch off.
Result:
A
REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY. Refer to REMOVAL [10/2022 - 08/2023] , or refer to REMOVAL [08/2023 - ]
Result:
B
See step 2
- CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ECU - SHIFT ACTUATOR ECU)
Pre-procedure1
- Disconnect the C35 transmission floor shift assembly (shift control ECU) connector.
- Disconnect the B57 shift control actuator assembly (shift actuator ECU) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result C35-24 (CA4H) - B57-4 (CA4H) Always Below 1 Ω Ω C35-10 (CA4L) - B57-3 (CA4L) Always Below 1 Ω Ω C35-24 (CA4H) or B57-4 (CA4H) - Body ground and other terminals Always 10 kΩ or higher kΩ C35-10(CA4L) or B57-3(CA4L) - Body ground and other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- Connect the shift control actuator assembly (shift actuator ECU) connector.
- Connect the transmission floor shift assembly (shift control ECU) connector.
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- CHECK SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU)
Pre-procedure1
- Disconnect the C35 transmission floor shift assembly (shift control ECU) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result C35-24 (CA4H) - C35-10 (CA4L) Ignition switch off 108 to 132 Ω Ω Result
Proceed to OK NG
Post-procedure1
- Connect the transmission floor shift assembly (shift control ECU) connector.
Result:
OK
REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU). Refer to REMOVAL [10/2022 - ]
Result:
NG
REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT ACTUATOR ECU). Refer to REMOVAL [10/2022 - 08/2023] , or refer to REMOVAL [08/2023 - ]