FC Control ECU Communication Stop Mode [12/2022 - 12/2023]: Procedure
- CHECK FOR OPEN IN CAN BUS MAIN WIRE (FC CONTROL ECU MAIN WIRE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the B1 FC control ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition B1-65 (CA1H) - B1-64 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Disconnect the A48 FC control ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A48-53 (EC) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A48-21 (E03) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω B1-104 (E1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω B1-105 (E2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω - Reconnect the cable to the negative (-) auxiliary battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition A48-2 (+BP3) - Body ground Ignition switch ON 11 to 14 V B1-43 (+B1) - Body ground Ignition switch ON 11 to 14 V B1-83 (+B2) - Body ground Ignition switch ON 11 to 14 V Result
Proceed to OK NG
Result:
OK
REPLACE FC CONTROL ECU. Refer to REMOVAL [12/2022 - 12/2023]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR