Can Communication System (W/ Vsc) -- Terminals Of Ecu |
- HINT:
- Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
- CAUTION:
- Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
- NOTICE:
- Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or any doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
- When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected (Toyota Fortuner RM000002HD2002X.html).
JUNCTION CONNECTOR |
NO. 1 JUNCTION CONNECTOR
No. 1 Junction Connector Wiring Color Connect to J57-4 (CANH) B No. 2 junction connector J57-1 (CANL) W J57-12 (CANH) B ECM J57-6 (CANL) W J57-13 (CANH) R Skid control ECU J57-7 (CANL) W NO. 2 JUNCTION CONNECTOR
No. 2 Junction Connector Wiring Color Connect to J56-1 (CANH) B No. 1 junction connector J56-2 (CANL) W J56-3 (CANH) B No. 3 junction connector J56-7 (CANL) W J56-4 (CANH) R Yaw rate sensor J56-6 (CANL) W NO. 3 JUNCTION CONNECTOR
Wiring Color Junction Connector A Side Color (CANH Side) Color (CANL Side) No. 2 junction connector (J52) B W Steering angle sensor (J53) W R Wiring Color Junction Connector B Side Color (CANH Side) Color (CANL Side) DLC3 (J51) W R
TERMINALS OF CONNECTORS FOR JUNCTION CONNECTOR |
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Terminal No. | Symbol |
1 | CANL |
2 | CANH |
CHECK DLC3 |
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Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
Measure the resistance according to the value(s) in the table below.
Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition D3-6 (CANH) - D3-14 (CANL) W - R Ignition switch off 54 to 69 Ω D3-6 (CANH) - D3-4 (CG) W - G Ignition switch off 200 Ω or higher D3-14 (CANL) - D3-4 (CG) R - G Ignition switch off 200 Ω or higher D3-6 (CANH) - D3-16 (BAT) W - G Ignition switch off 6 kΩ or higher D3-14 (CANL) - D3-16 (BAT) R - G Ignition switch off 6 kΩ or higher
CHECK SKID CONTROL ECU |

Disconnect the S25 ECU connector.
Measure the resistance according to the value(s) in the table below.
Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition S25-25 (CANH) - S25-14 (CANL) B - W Ignition switch off 54 to 69 Ω S25-25 (CANH) - S25-1 (GND1) B - W-B Ignition switch off 200 Ω or higher S25-14 (CANL) - S25-1 (GND1) W - W-B Ignition switch off 200 Ω or higher S25-25 (CANH) - S25-12 (+BS) B - W-R Ignition switch off 6 kΩ or higher S25-14 (CANL) - S25-12 (+BS) W - W-R Ignition switch off 6 kΩ or higher
CHECK ECM (for 1KD-FTV) |

Disconnect the E5 and E6 ECM connectors.
Measure the resistance according to the value(s) in the table below.
Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition E5-24 (CANH) - E5-23 (CANL) B - W Ignition switch off 108 to 132 Ω E5-24 (CANH) - E6-7 (E1) B - BR Ignition switch off 200 Ω or higher E5-23 (CANL) - E6-7 (E1) W - BR Ignition switch off 200 Ω or higher E5-24 (CANH) - E5-2 (BATT) B - L Ignition switch off 6 kΩ or higher E5-23 (CANL) - E5-2 (BATT) W - L Ignition switch off 6 kΩ or higher
CHECK STEERING ANGLE SENSOR |

Disconnect the S23 sensor connector.
Measure the resistance according to the value(s) in the table below.
Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition S23-4 (CANH) - S23-3 (CANL) W - R Ignition switch off 54 to 69 Ω S23-4 (CANH) - S23-2 (ESS) W - W-B Ignition switch off 200 Ω or higher S23-3 (CANL) - S23-2 (ESS) R - W-B Ignition switch off 200 Ω or higher S23-4 (CANH) - S23-6 (BAT) W - B Ignition switch off 6 kΩ or higher S23-3 (CANL) - S23-6 (BAT) R - B Ignition switch off 6 kΩ or higher
CHECK YAW RATE SENSOR |

Disconnect the Y1 sensor connector.
Measure the resistance according to the value(s) in the table below.
Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition Y1-3 (CANH) - Y1-2 (CANL) B - W Ignition switch off 54 to 69 Ω Y1-3 (CANH) - Y1-1 (GND) B - W-B Ignition switch off 200 Ω or higher Y1-2 (CANL) - Y1-1 (GND) W - W-B Ignition switch off 200 Ω or higher Y1-3 (CANH) - D3-16 (BAT) B - G Ignition switch off 6 kΩ or higher Y1-2 (CANL) - D3-16 (BAT) W - G Ignition switch off 6 kΩ or higher