CAN Communication: Other Lexus IS II

COMMUNICATION STOP MODE TABLE

COMMUNICATION STOP MODE TABLE

TERMINALS OF ECU

HINT

This section describes the standard CAN values for all CAN related components.

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Scheme 100

Scheme 101

1. CAN J/C (CAN LH J/C, CAN RH J/C) HINT: The connectors connected to the CAN J/C can be distinguished by the colors of the bus lines and the connecting side of the junction connector. The connectors can be connected to any terminals on the same side. CAN LH J/C Wiring color: CAN LH J/C A SIDE (WITH EARTH TERMINAL) WIRING COLOR TABLE CAN LH J/C A Side (with Earth Terminal) Code Color (CANH Side) Color (CANL Side) Steering angle sensor J1 P W ECM J2 B W Seat belt control ECU J3 V w Center airbag sensor J4 R w Wiring color: CAN LH J/C B SIDE (WITHOUT EARTH TERMINAL) WIRING COLOR TABLE CAN LH J/C B Side (without Earth Terminal) Code Color (CANH Side) Color (CANL Side) Yaw rate sensor J5 P W Skid control ECU (without VDIM) J6 R w CAN main bus line (bus line connecting CAN LH J/C and CAN RH J/C) J7 B w DLC3 J8 G w CAN LH J/C B Side (without Earth Terminal) Code Color (CANH Side) Color (CANL Side) Distance control ECU J9 GR W CAN RH J/C Wiring color: CAN RH J/C A SIDE (WITH EARTH TERMINAL) WIRING COLOR TABLE 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 Power steering ECU J82 P W Skid control ECU (with VDIM) J83 R w Wiring color: CAN RH J/C B SIDE (WITHOUT EARTH TERMINAL) WIRING COLOR TABLE CAN RH J/C B Side (without Earth Terminal) Code Color (CANH Side) Color (CANL Side) Gateway ECU J84 B W 4WD control ECU J86 V W The terminals on connectors for the CAN J/C TERMINAL SYMBOL DESCRIPTION TABLE Terminal Terminal symbol 1 CANH 2 CANL Wiring diagram for identifying CAN J/C connectors
2. DLC3 Measure the resistance according to the value(s) in «DLC3 STANDARD RESISTANCE DESCRIPTION TABLE»(ref-235565-S39314988832006062400000) . Standard resistance DLC3 STANDARD RESISTANCE DESCRIPTION TABLE 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 ohms J21-6 (CANH) - J21-4 (CG) G - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J21-14 (CANL) - J21-4 (CG) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J21-6 (CANH) - J21-16 (BAT) G - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher J21-14 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
3. SKID CONTROL ECU (with VDIM) Measure the resistance according to the value(s) in «SKID CONTROL ECU (WITH VDIM)»(ref-235565-S31378536152006062400000) . Standard resistance SKID CONTROL ECU (WITH VDIM) Terminals Wiring Color Terminal Description Condition Specified Condition J77-8 (CANH) - J77-16 (CANL) R - W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 ohms J77-8 (CANH) - J78-26 (GND1) R - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J77-16 (CANL) - J78-26 (GND1) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J77-8 (CANH) - J21-16 (BAT) R - L HIGH-level CAN bus line -Battery positive Engine Switch off 1 M ohms or higher J77-16 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
4. SKID CONTROL ECU WITH ACTUATOR (without VDIM) Measure the resistance according to the value(s) in «SKID CONTROL ECU WITH ACTUATOR (WITHOUT VDIM)»(ref-235565-S08695165012006062400000) . Standard resistance SKID CONTROL ECU WITH ACTUATOR (WITHOUT VDIM) 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 ohms A14-11 (CANH) - A14-32 (GND1) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A14-25 (CANL) - A14-32 (GND1) R - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A14-11 (CANH) - A14-31 (+BS) B - BR HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher A14-25 (CANL) - A14-31 (+BS) R - BR LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
5. STEERING ANGLE SENSOR Measure the resistance according to the value(s) in «STEERING ANGLE SENSOR»(ref-235565-S03557773512006062400000) . Standard resistance STEERING ANGLE SENSOR 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 ohms J23-10 (CANH) - J23-2 (ESS) P - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J23-9 (CANL) - J23-2 (ESS) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J23-10 (CANH) - J23-3 (BAT) P - LG HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher J23-9 (CANL) - J23-3 (BAT) W - LG LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
6. YAW RATE SENSOR Measure the resistance according to the value(s) in «YAW RATE SENSOR»(ref-235565-S28360524192006062400000) . Standard resistance YAW RATE SENSOR 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 ohms J41-3 (CANH) - J41-1 (GND) P - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J41-2 (CANL) - J41-1 (GND) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J41-3 (CANH) - J21-16 (BAT) P - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher J41-2 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
7. DISTANCE CONTROL ECU Measure the resistance according to the value(s) in «DISTANCE CONTROL ECU»(ref-235565-S06665256432006062400000) . Standard resistance DISTANCE CONTROL ECU Terminals Wiring Color Condition Specified Condition J17-8 (CANH) - J17-9 (CANL) GR - W Engine Switch off 54 to 69 ohms J17-8 (CANH) - J17-12 (GND) GR - BR Engine Switch off 1 k ohms or higher J17-9 (CANL) - J17-12 (GND) W - BR Engine Switch off 1 k ohms or higher J17-8 (CANH) - J21-16 (BAT) GR - L Engine Switch off 1 M ohms or higher J17-9 (CANL) - J21-16 (BAT) W - L Engine Switch off 1 M ohms or higher
8. SEAT BELT CONTROL ECU Measure the resistance according to the value(s) in «SEAT BELT CONTROL ECU»(ref-235565-S34417893492006062400000) . Standard resistance SEAT BELT CONTROL ECU 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 ohms Q38-4 (CANH) - Q38-18 (PGND) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher Q38-6 (CANL) - Q38-18 (PGND) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher Terminals Wiring Color Terminal Description Condition Specified Condition Q38-4 (CANH) - Q38-9 (+B) B - W HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher Q38-6 (CANL) - Q38-9 (+B) W - W LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
9. 4WD CONTROL ECU Measure the resistance according to the value(s) in «4WD CONTROL ECU»(ref-235565-S21395613292006062400000) . Standard resistance 4WD CONTROL ECU Terminals Wiring Color Terminal Description Condition Specified Condition A32-1 (CANH) - A32-14 (CANL) B - V HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 ohms A32-1 (CANH) - A32-30 (GND) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A32-14 (CANL) - A32-30 (GND) V - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A32-1 (CANH) - J21-16 (BAT) B - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher A32-14 (CANL) - J21-16 (BAT) V - L LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
10. POWER STEERING ECU Measure the resistance according to the value(s) in «POWER STEERING ECU»(ref-235565-S00208476692006062400000) . Standard resistance POWER STEERING ECU 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 ohms A31-2 (CANH) - A31-5 (PGND) B - B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A31-3 (CANL) - A31-5 (PGND) R - B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A31-2 (CANH) - A31-4 (PIG) B - R HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher A31-3 (CANL) - A31-4 (PIG) R - R LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
11. CENTER AIRBAG SENSOR Measure the resistance according to the value(s) in «CENTER AIRBAG SENSOR»(ref-235565-S22735786632006062400000) . Standard resistance CENTER AIRBAG SENSOR 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 ohms J47-13 (CANH) - J47-25 (E1) R - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J47-22 (CANL) - J47-25 (E1) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher J47-13 (CANH) - J21-16 (BAT) R - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher J47-22 (CANL) - J21-16 (BAT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
12. ECM Measure the resistance according to the value(s) in «ECM STANDARD RESISTANCE DESCRIPTION TABLE»(ref-235565-S16687455142006062400000) . Standard resistance ECM STANDARD RESISTANCE DESCRIPTION TABLE Terminals Condition Specified Condition A5-25 (CANH) - A5-24 (CANL) Engine Switch off 108 to 132 ohms Measure the resistance according to the value(s) in «ECM WIRE HARNESS VIEW STANDARD RESISTANCE DESCRIPTION TABLE»(ref-235565-S07787779112006062400000) . Standard resistance ECM WIRE HARNESS VIEW STANDARD RESISTANCE DESCRIPTION TABLE 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 ohms A5-25 (CANH) - A5-2 (EC) B - W-B HIGH-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A5-24 (CANL) - A5-2 (EC) W - W-B LOW-level CAN bus line - Ground Engine Switch off 1 k ohms or higher A5-25 (CANH) - A5-4 (BATT) B - L HIGH-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher A5-24 (CANL) - A5-4 (BATT) W - L LOW-level CAN bus line - Battery positive Engine Switch off 1 M ohms or higher
13. GATEWAY ECU Measure the resistance according to the value(s) in «GATEWAY ECU STANDARD RESISTANCE DESCRIPTION TABLE»(ref-235565-S31591084152006062400000) . Standard resistance GATEWAY ECU STANDARD RESISTANCE DESCRIPTION TABLE Terminals Condition Specified Condition J76-17 (CA1H) - J76-18 (CA1L) Engine Switch off 108 to 132 ohms Measure the resistance according to the value(s) in «GATEWAY ECU WIRE HARNESS VIEW STANDARD RESISTANCE DESCRIPTION TABLE»(ref-235565-S14473608262006062400000) .

Standard resistance

GATEWAY ECU WIRE HARNESS VIEW STANDARD RESISTANCE DESCRIPTION TABLE

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1. BUS CHECK Select "BUS CHECK" from the "OBD/MOBD MENU" screen. HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester via CAN VIM. Press "ENTER" on the intelligent tester. 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.
2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION Systems (ECUs, sensors) that adopt CAN communication vary depending on the vehicle's optional settings. Check which systems (ECUs, sensors) are installed on the vehicle. CHECK METHOD DESCRIPTION TABLE ECU/Sensor name Check method Skid control ECU (with VDIM) Engine model 2GR-FSE Skid control ECU (without VDIM) Engine model 4GR-FSE Steering sensor Installed on all vehicles Yaw rate sensor Installed on all vehicles ECM Installed on all vehicles Distance control ECU Dynamic radar cruise control Gateway ECU Installed on all vehicles Seat belt control ECU Dynamic radar cruse control Power steering ECU Installed on all vehicles 4WD control ECU 4 wheel drive Center airbag sensor Installed on all vehicles
3. DTC TABLE BY ECU HINT: If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-235565-S11257827982006062400000) . (If however, U0235 or U01102 is output alone, see the dynamic radar cruise control system.) ECM/Intelligent tester display "ENGINE" HINT: DTC communication uses the CAN communication system. Distance control ECU data is also output. ECM/INTELLIGENT TESTER DISPLAY "ENGINE" DTC No. Detection Item U0100 (3) Lost Communication With ECM/PCM "A" U0101 (1) Lost Communication With Transfer Case Control Module U0122 (3) Lost Communication With Vehicle Dynamics Control Module U0123 (3) Lost Communication With Yaw Rate Sensor Module U0126 (3) Lost Communication With Steering Angle Sensor Module U0235 (2) Lost Communication With Cruise Control Front Distance Range Sensor U1101 (3) Lost Communication With Distance Control ECU U1102 (2) Lost Communication With Radar Sensor (1) The ECM is malfunctioning if U0101 is output. Replace the ECM. (2) If U0235 or U1102 is output alone, the CAN communication is normal (See «DTC U0235 LOST COMMUNICATION WITH CRUISE CONTROL FRONT DISTANCE RANGE SENSOR»(ref-235581-S42021591172006062400000) for U0235, «DTC U1102 LOST COMMUNICATION WITH RADAR SENSOR»(ref-235581-S10421510652006062400000) for U1102). (3) Dynamic radar cruise DTC. ECM/Intelligent tester display "ECT" HINT: DTC communication uses the CAN communication system. ECM/INTELLIGENT TESTER DISPLAY "ECT" DTC No. Detection Item U0100 ( (1) ) Lost Communication With ECM/PCM "A" - (1) The ECM is malfunctioning if U0100 is output. Replace ECM. SKID CONTROL ECU/Intelligent tester display "ABS/VSC/TRAC" HINT: DTC communication uses the SIL line. SKID CONTROL ECU/INTELLIGENT TESTER DISPLAY "ABS/VSC/TRAC" DTC No. Detection Item U0073 Control Module communication Bus Off U0100 Lost Communication With ECM/PCM "A" U0123 Lost Communication With Yaw Rate sensor Module U0124 Lost Communication With Lateral Acceleration Sensor Module U0126 Lost Communication With Steering Angle Sensor Module POWER STEERING ECU/Intelligent tester display "EPS" HINT: DTC communication uses the CAN communication system. POWER STEERING ECU/INTELLIGENT TESTER DISPLAY "EPS" DTC No. Detection Item U0105 Lost Communication With ECM U0121 Lost Communication With Anti-lock Brake System (ABS) Control Module SEAT BELT CONTROL ECU/Intelligent tester display "PSB" HINT: DTC communication uses the SIL line. SEAT BELT CONTROL ECU/INTELLIGENT TESTER DISPLAY "PSB" DTC No. Detection Item U0100 Lost Communication With ECM/PCM "A" U0122 Lost Communication With Vehicle Dynamics Control Module U0235 ( (1) ) Lost Communication With Gateway ECU U1101 Lost Communication With Distance Control ECU U1102 ( (1) ) Lost Communication With Radar Sensor U0151 Lost Communication With Airbag ECU HINT: (1) If U0235 or U1102 is output alone, the CAN communication is normal (See «DTC U0235: LOST COMMUNICATION WITH CRUISE CONTROL FRONT DISTANCE RANGE SENSOR»(ref-235580-S14946483222006062400000) for U0235, «DTC U1102: LOST COMMUNICATION WITH RADAR SENSOR»(ref-235580-S14946483222006062400000) for U1102). 4WD CONTROL ECU/Intelligent tester display "4WD" HINT: DTC communication uses the CAN communication system. 4WD CONTROL ECU/INTELLIGENT TESTER DISPLAY "4WD" DTC No. Detection Item U0073 Control Module communication Bus Off U0100 Lost Communication With ECM/PCM "A" U0122 Lost Communication With Vehicle Dynamics Control Module U0126 Lost Communication With Steering Angle Sensor Module GATEWAY ECU HINT: The gateway ECU is connected to the CAN communication system, but CAN communication DTCs are not output. CENTER AIRBAG SENSOR HINT: The center airbag sensor is connected to the CAN communication system, but CAN communication DTCs are not output.
4. DTC COMBINATION TABLE

DTC COMBINATION TABLE (1 OF 2)

DTC COMBINATION MODE (2 OF 2)

HINT

1. O: Set
2. X: Not set or may be set according to the malfunction part when one side of the CAN branch line opens.
3. #: Set under the condition shown in the table.
4. See «Skid Control ECU Communication Stop Mode»(ref-235565-S31579708032006062400000)
5. See «Steering Angle Sensor Communication Stop Mode»(ref-235565-S07486243002006062400000)
6. See «Yaw Rate Sensor Communication Stop Mode»(ref-235565-S20305804972006062400000)
7. See «Gateway ECU Communication Stop Mode»(ref-235565-S37784123532006062400000)
8. See «ECM Communication Stop Mode»(ref-235565-S35282911002006062400000)
9. See «Distance Control ECU Communication Stop Mode»(ref-235565-S02509228532006062400000)
10. See «Seat Belt Control ECU Communication Stop Mode»(ref-235565-S22456288322006062400000)
11. See «Power Steering ECU Communication Stop Mode»(ref-235565-S40437705852006062400000)
12. See «4WD Control ECU Communication Stop Mode»(ref-235565-S32324445282006062400000)
13. See «Center Airbag Sensor Communication Stop Mode»(ref-235565-S21624602562006062400000)

FAIL-SAFE TABLE

1. FAIL-SAFE FUNCTION When communication fails in any of the CAN bus lines (communication lines), a fail-safe function(s) will operate. The fail-safe function that is specified for each system operates to prevent those systems from malfunctioning. Effects on each system when communication is impossible. (For further details, see the references for each system.)

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