Lexus IS250 IS220d GSE20 ALE20 - CAN COMMUNICATION
CAN COMMUNICATION SYSTEM (for RHD) - TERMINALS OF ECU
- HINT:
- This section describes the standard CAN values for all CAN related components.
CAN J/C (CAN LH J/C, CAN RH J/C) |
- HINT:
CAN LH J/C
CAN LH J/C A Side (with Earth Terminal) | Code | Color (CANH Side) | Color (CANL Side) |
Power steering ECU | J1 | P | W |
ECM | J2 | B | W |
Seat belt control ECU | J3 | V | W |
Center airbag sensor | J4 | R | W |
CAN LH J/C B Side (without Earth Terminal) | Code | Color (CANH Side) | Color (CANL Side) |
Yaw rate sensor | J5 | P | W |
CAN main bus line (bus line connecting CAN LH J/C and CAN RH J/C) | J7 | B | W |
Television camera ECU | J8 | L | W |
CAN RH J/C
CAN RH J/C A Side (with Earth Terminal) | Code | Color (CANH Side) | Color (CANL Side) |
CAN main bus line (bus line connecting CAN RH J/C and CAN LH J/C) | J81 | B | W |
Steering angle sensor | J82 | P | W |
DLC3 | J94 | G | W |
Skid control ECU | J96 | R | W |
CAN RH J/C B Side (without Earth Terminal) | Code | Color (CANH Side) | Color (CANL Side) |
Gateway ECU | J84 | B | W |
Distance control ECU | J97 | GR | W |

The terminals on connectors for the CAN J/C
Terminal | Terminal symbol |
1 | CANH |
2 | CANL |
Wiring diagram for identifying CAN J/C connectors.
DLC3 |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition J21-6 (CANH) - J21-14 (CANL) G - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω J21-6 (CANH) - J21-4 (CG) G - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J21-14 (CANL) - J21-4 (CG) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J21-6 (CANH) - J21-16 (BAT) G - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher J21-14 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
SKID CONTROL ECU WITH ACTUATOR (WITHOUT VDIM) |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition A14-11 (CANH) - A14-25 (CANL) B - R HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω A14-11 (CANH) - A14-32 (GND1) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher A14-25 (CANL) - A14-32 (GND1) R - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher A14-11 (CANH) - A14-31 (+BS) B - BR HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher A14-25 (CANL) - A14-31 (+BS) R - BR LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
STEERING ANGLE SENSOR |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition J23-10 (CANH) - J23-9 (CANL) P - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω J23-10 (CANH) - J23-2 (ESS) P - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J23-9 (CANL) - J23-2 (ESS) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J23-10 (CANH) - J23-3 (BAT) P - LG HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher J23-9 (CANL) - J23-3 (BAT) W - LG LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
YAW RATE SENSOR |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition J41-3 (CANH) - J41-2 (CANL) P - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω J41-3 (CANH) - J41-1 (GND) P - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J41-2 (CANL) - J41-1 (GND) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J41-3 (CANH) - J21-16 (BAT) P - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher J41-2 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
DISTANCE CONTROL ECU |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Condition Specified Condition J17-8 (CANH) - J17-9 (CANL) GR - W Engine Switch off 54 to 69 Ω J17-8 (CANH) - J17-12 (GND) GR - BR Engine Switch off 1 kΩ or higher J17-9 (CANL) - J17-12 (GND) W - BR Engine Switch off 1 kΩ or higher J17-8 (CANH) - J21-16 (BAT) GR - L Engine Switch off 1 kΩ or higher J17-9 (CANL) - J21-16 (BAT) W - L Engine Switch off 1 kΩ or higher
SEAT BELT CONTROL ECU |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition Q38-4 (CANH) - Q38-6 (CANL) B - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω Q38-4 (CANH) - Q38-18 (PGND) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher Q38-6 (CANL) - Q38-18 (PGND) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher Q38-4 (CANH) - Q38-9 (+B) B - W HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher Q38-6 (CANL) - Q38-9 (+B) W - W LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
TELEVISION CAMERA ECU |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition J92-7 (CANH) - J92-6 (CANL) L - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω J92-78 (CANH) - J93-8 (GND1) L - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J92-6 (CANL) - J93-8 (GND1) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J92-7 (CANH) - J93-1 (+B) L - R HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher J92-6 (CANL) - J93-1 (+B) W - R LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
POWER STEERING ECU |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition A31-2 (CANH) - A31-3 (CANL) B - R HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω A31-2 (CANH) - A31-5 (PGND) B - B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher A31-3 (CANL) - A31-5 (PGND) R - B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher A31-2 (CANH) - A31-4 (PIG) B - R HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher A31-3 (CANL) - A31-4 (PIG) R - R LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
CENTER AIRBAG SENSOR |

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition J47-13 (CANH) - J47-22 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω J47-13 (CANH) - J47-25 (E1) R - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J47-22 (CANL) - J47-25 (E1) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J47-13 (CANH) - J21-16 (BAT) R - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher J47-22 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
ECM |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Condition Specified Condition A5-25 (CANH) - A5-24 (CANL) Engine Switch off 108 to 132 Ω

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition A5-25 (CANH) - A5-24 (CANL) B - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 108 to 132 Ω A5-25 (CANH) - A5-2 (EC) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher A5-24 (CANL) - A5-2 (EC) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher A5-25 (CANH) - A5-4 (BATT) B - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher A5-24 (CANL) - A5-4 (BATT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher
GATEWAY ECU |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Condition Specified Condition J76-17 (CA1H) - J76-18 (CA1L) Engine Switch off 108 to 132 Ω

Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Terminals Wiring Color Terminal Description Condition Specified Condition J76-17 (CA1H) - J76-18 (CA1L) B - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 108 to 132 Ω J76-17 (CA1H) - J76-24 (GND) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J76-18 (CA1L) - J76-24 (GND) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 kΩ or higher J76-17 (CA1H) - J76-10 (BATT) B - LG HIGH-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher J76-18 (CA1L) - J76-10 (BATT) W - LG LOW-level CAN bus line - Battery positive Engine Switch off 1 kΩ or higher