TERMINALS OF ECU
HINT
This section describes the standard CAN values for all CAN related components.
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- Junction Connector The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector. J53, J54, J55 and J56 are interchangeable. *1: w/ Air Suspension System CAN J/C CONNECTORS SPECIFICATIONS CAN J/C connectors (A side, w/ earth terminal) Color (CAN-H Side) Color (CAN-L Side) ECM (J53) L W DLC3 (J54) B W Translate ECU (J55) R W Suspension Control ECU (J56) *1 G W
- The Terminals of Connectors for the Junction Connector TERMINALS OF CONNECTORS FOR THE JUNCTION CONNECTOR Terminal Terminal symbol 1 CANH 2 CANL
- DLC3 Measure the resistance according to the value(s) in the table below. Standard: TERMINALS SPECIFIED CONDITION CHART Terminals Wiring Color Condition Specified Value D6-6 (CANH) - D6-14 (CANL) B - W Ignition Switch OFF 54 to 69 ohm D6-6 (CANH) - D6-4 (CG) B - O Ignition Switch OFF 3 k ohm or more D6-14 (CANL) - D6-4 (CG) W - O Ignition Switch OFF 3 k ohm or more D6-6 (CANH) - D6-16 (BAT) B - W-R Ignition Switch OFF 1 M ohm or more D6-14 (CANL) - D6-16 (BAT) W - W-R Ignition Switch OFF 1 M ohm or more
- Translate ECU Measure the resistance according to the value(s) in the table below. Standard: TERMINAL SPECIFIED CONDITION CHART Terminals Condition Specified Value T5-14 (ENG+) - T5-16 (ENG-) Ignition Switch OFF 108 to 132 ohm Measure the resistance according to the value(s) in the table below. Standard: TERMINAL SPECIFIED CONDITION CHART Terminals Wiring Color Condition Specified Value T5-14 (ENG+) - T5-16 (ENG-) R - W Ignition Switch OFF 108 to 132 ohm T5-14 (ENG+) - T5-40 (GND) R - O Ignition Switch OFF 3 k ohm or more T5-16 (ENG-) - T5-40 (GND) W - O Ignition Switch OFF 3 k ohm or more T5-14 (ENG+) - D6-16 (BAT) R - W-R Ignition Switch OFF 1 M ohm or more T5-16 (ENG-) - D6-16 (BAT) W - W-R Ignition Switch OFF 1 M ohm or more
- ECM Measure the resistance according to the value(s) in the table below. Standard: TERMINAL SPECIFIED CONDITION CHART Terminals Condition Specified Value E5-33 (CANH) - E5-34 (CANL) Ignition Switch OFF 108 to 132 ohm Measure the resistance according to the value(s) in the table below. Standard: TERMINAL SPECIFIED CONDITION CHART Terminals Wiring Color Condition Specified Value E5-33 (CANH) - E5-34 (CANL) L - W Ignition Switch OFF 108 to 132 ohm E5-33 (CANH) - E8-7 (E0I) L - W-B Ignition Switch OFF 3 k ohm or more E5-34 (CANL) - E8-7 (E0I) W - W-B Ignition Switch OFF 3 k ohm or more E5-33 (CANH) - E4-3 (BATT) L - B-Y Ignition Switch OFF 1 M ohm or more E5-34 (CANL) - E4-3 (BATT) W - B-Y Ignition Switch OFF 1 M ohm or more
- Suspension Control ECU Measure the resistance according to the value(s) in the table below. Standard: TERMINAL SPECIFIED CONDITION CHART Terminals Wiring Color Condition Specified Value S25-29 (CANH) - S25-28 (CANL) G - W Ignition Switch OFF 54 to 69 ohm S25-29 (CANH) - S25-22 (GND) G - W-B Ignition Switch OFF 3 k ohm or more S25-28 (CANL) - S25-22 (GND) W - W-B Ignition Switch OFF 3 k ohm or more S25-29 (CANH) - S25-25 (BAT) G - V Ignition Switch OFF 1 M ohm or more S25-28 (CANL) - S25-25 (BAT) W - V Ignition Switch OFF 1 M ohm or more
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- BUS CHECK HINT: The ECUs that are properly connected to the CAN communication system can be displayed using the hand-held tester via CAN VIM. Select "BUS CHECK" from the "OBD/MOBD MENU" screen. Press "ENTER" on the hand-held tester via CAN VIM. The screen displays the ECUs and sensors that are properly connected to the CAN communication system. HINT: There is a communication stop in the system of any properly connected ECUs or sensors that are not displayed (see «PROBLEM SYMPTOMS TABLE»(ref-227583-S25993423202006040600000) ).
FAIL-SAFE CHART
- FAIL-SAFE FUNCTION When communication fails in any of the CAN bus lines (communication lines) due to a short circuit or any other cause, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning. Effects on each system when communication is impossible are as follows. TRANSLATE ECU CHART ECM Translate ECU Suspension Control ECU Rx Tx - Tx Rx Tx Tx Tx Rx DIAGNOSIS PROCEDURE - Action when unable to communicate DTC detection (Driver detectable) ECM - Not detectable (-) Translate ECU VSC/TRC function stops Not detectable (VSC warning lamp comes on) Suspension Control ECU [When unable to communicate with ECM] Function stops (Vehicle height cannot be changed until the ignition switch is turned off) [When unable to communicate with Translate ECU] Vehicle height is maintained at the normal level until the ignition switch is turned off. If communication is still impossible even after the ignition switch is turned on again, the same height is maintained. Detectable (Only DTCs are stored) HINT: Rx: Reception from each ECU. Tx: Transmission to each ECU.