Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

CHECK RESISTANCE (CANL - CANH OF DLC3)

Measure the resistance between the terminals CANL and CANH of the DLC3.

RESISTANCE

A	54 to 66 Ω
B	1 MΩ or more
C	Less than 54 Ω
D	108 to 132 Ω

Fig 1: Measuring Resistance Between Terminals CANL & CANH Of DLC3

B: Go to step 4
C: Go to step 11
D: Go to step 5
A: Go to next step

CHECK HARNESS AND CONNECTOR (CANL CIRCUIT - +B CIRCUIT, CANH CIRCUIT - +B CIRCUIT)
1. Measure the resistance between the terminals CANL and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
2. Measure the resistance between the terminal CANH and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 2: Measuring Resistance Between Terminals CANL & BAT Of DLC3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Go to step 15
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (CANL CIRCUIT - GROUND CIRCUIT, CANH CIRCUIT - GROUND CIRCUIT)
1. Measure the resistance between the terminals CANL and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
2. Measure the resistance between the terminal CANH and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 3: Measuring Resistance Between Terminals CANL & CG Of DLC3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Go to step 23
2. OK: Go to next step
3. IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION
CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR (J17) - DLC3)
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminal CANL of the DLC3 and CANL of the junction connector (J17).
  OK:
  
  Resistance: 1 Ω or less
3. Measure the resistance between the terminal CANH of the DLC3 and CANH of the junction connector (J17).
  OK:
  
  Resistance: 1 Ω or less
Fig 4: Measuring Resistance Between Terminal CANH Of DLC3 & CANH Of Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Go to step 1
2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR AND GO TO STEP 1
CHECK HARNESS AND CONNECTOR (CAN BUS CIRCUIT)
1. Disconnect the skid control ECU connector.
2. Measure the resistance between the terminals CANL and CANH of the skid control ECU wire harness side connector.
  OK:
  
  Resistance: 108 to 132 Ω
Fig 5: Measuring Resistance Between Terminals CANL & CANH Of Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Go to step 10
2. NG: Go to next step
CHECK JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminals 1 and 4 of the junction connector.
  OK:
  
  Resistance: 1 Ω or less
3. Measure the resistance between the terminals 12 and 15 of the junction connector.
  OK:
  
  Resistance: 1 Ω or less
Fig 6: Measuring Resistance Between Terminals 12 & 15 Of Junction Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE JUNCTION CONNECTOR
2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR)
CHECK RESISTANCE (CANL - CANH OF SKID CONTROL ECU)
1. Disconnect the skid control ECU connector.
2. Measure the resistance between the terminals CANL and CANH of the skid control ECU.
  OK:
  
  Resistance: 108 to 132 Ω
Fig 7: Measuring Resistance Between Terminals CANL & CANH Of Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE ABS & TRACTION ACTUATOR ASSY
2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION
CHECK HARNESS AND CONNECTOR (DLC3 - JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminals CANL and CANH of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 8: Measuring Resistance Between Terminals CANL & CANH Of DLC3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to Next Step
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J14).
2. Disconnect the skid control ECU connector.
3. Measure the resistance between the terminals CANL and CANH of the skid control ECU wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 9: Measuring Resistance Between Terminals CANL & CANH Of Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK RESISTANCE (CANL - CANH OF SKID CONTROL ECU)
1. Disconnect the skid control ECU connector.
2. Measure the resistance between the terminals CANL and CANH of the skid control ECU.
  OK:
  
  Resistance: 108 to 132 Ω
Fig 10: Measuring Resistance Between Terminals CANL & CANH Of Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE ABS & TRACTION ACTUATOR ASSY
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Disconnect the steering angle sensor connector.
3. Measure the resistance between the terminals CANL and CANH of the steering angle sensor wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 11: Measuring Resistance Between Terminals CANL & CANH Of Steering Angle
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK RESISTANCE (CANL - CANH OF STEERING ANGLE SENSOR)
1. Disconnect the skid control ECU connector.
2. Measure the resistance between the terminals CANL and CANH of the steering angle sensor.
  OK:
  
  Resistance: 108 to 132 Ω
Fig 12: Checking Resistance (CANL & CANH Of Steering Angle Sensor)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE STEERING ANGLE SENSOR
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J17).
2. Disconnect the yaw rate sensor connector.
3. Measure the resistance between the terminals CANL and CANH of the yaw rate sensor wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 13: Checking Harness & Connector (YAW Rate Sensor & Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminals 1, 2, 3 or 4 and 12, 13, 14 or 15 of the junction connector.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 14: Checking Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE JUNCTION CONNECTOR
2. OK: REPLACE YAW RATE SENSOR
CHECK HARNESS AND CONNECTOR (DLC3 - JUNCTION CONNECTOR (+B SHORT))
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminals CANL and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
3. Measure the resistance between the terminals CANH and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 15: Checking Harness & Connector (DLC3 & Junction Connector (+B SHORT))
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to Next Step
CHECK SKID CONTROL ECU
1. Connect the junction connector (J17).
2. Disconnect the skid control ECU connector.
3. Measure the resistance between the terminals CANL and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure the resistance between the terminals CANH and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 16: Checking Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE ABS & TRACTION ACTUATOR ASSY
2. NG: Go to next step
CHECK STEERING ANGLE SENSOR
1. Disconnect the steering angle sensor connector.
2. Measure resistance between terminals CANL and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
3. Measure resistance between terminals CANH and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 17: Checking Steering Angle Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE STEERING ANGLE SENSOR
2. NG: Go to next step
CHECK YAW RATE SENSOR
1. Disconnect the steering angle sensor connector.
2. Measure the resistance between the terminals CANL and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
3. Measure the resistance between the terminals CANH and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 18: Checking YAW Rate Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE YAW RATE SENSOR
2. NG: Go to next step
CHECK AND REPLACE JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Measure the resistance the between terminal BAT of the DLC3 and any CANL of the junction connector wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or more
3. Measure the resistance between the terminal BAT of the DLC3 and any CANH of the junction connector wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 19: Disconnecting Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE JUNCTION CONNECTOR
2. OK: Go to Next Step
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J17).
2. Disconnect the skid control ECU.
3. Measure the resistance between the terminal CANL of the skid control ECU wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure the resistance between the terminal CANH of the skid control ECU wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 20: Checking Harness & Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J17).
2. Disconnect the steering angle sensor connector.
3. Measure the resistance between the terminal CANL of the steering angle sensor wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure the resistance between the terminal CANH of the steering angle sensor wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 21: Disconnecting Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J17).
2. Disconnect the yaw rate sensor connector.
3. Measure the resistance between the terminal CANL of the yaw rate sensor wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure the resistance between the terminal CANH of the yaw rate sensor wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 22: Checking Harness & Connector (Yaw Rate Sensor & Junction Connector J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION
CHECK HARNESS AND CONNECTOR (DLC3 - JUNCTION CONNECTOR (GND SHORT))
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminals CANL and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
3. Measure the resistance between the terminals CANH and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 23: Checking Harness & Connector (DLC3 & Junction Connector (GND SHORT))
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK SKID CONTROL ECU
1. Disconnect the skid control ECU connector.
2. Measure the resistance between the terminals CANL and CG of the DLC3.
  OK:
  
  Resistance: 3 kΩ or more
3. Measure the resistance between the terminals CANH and CG of the DLC3.
  OK:
  
  Resistance: 3 kΩ or higher
Fig 24: Checking Skid Control ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE ABS & TRACTION ACTUATOR ASSY
2. NG: Go to next step
CHECK STEERING ANGLE SENSOR
1. Disconnect the steering angle sensor connector.
2. Measure the resistance between the terminals CANL and CG of the DLC3.
  OK:
  
  Resistance: 3 kΩ or more
3. Measure the resistance between the terminals CANH and CG of the DLC3.
  OK:
  
  Resistance: 3 kΩ or higher
Fig 25: Checking Steering Angle Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE STEERING ANGLE SENSOR
2. NG: Go to next step
CHECK YAW RATE SENSOR
1. Disconnect the steering angle sensor connector.
2. Measure the resistance between the terminals CANL and CG of the DLC3.
  OK:
  
  Resistance: 3 kΩ or more
3. Measure the resistance between the terminals CANH and CG of the DLC3.
  OK:
  
  Resistance: 3 kΩ or higher
Fig 26: Checking Yaw Rate Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE YAW RATE SENSOR
2. NG: Go to next step
CHECK JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Measure the resistance between the terminal CG of the DLC3 and any CANL of the junction connector wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or more
3. Measure the resistance between the terminal CG of the DLC3 and any CANH of the junction connector wire harness side connector.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 27: Checking Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE JUNCTION CONNECTOR
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J17).
2. Disconnect the skid control ECU.
3. Measure the resistance between the terminal CANL of the skid control ECU wire harness side connector and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure resistance between terminal CANH of the skid control ECU wire harness side connector and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
  
  Fig 28: Checking Harness & Connector (Skid Control ECU & Junction Connector J17)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17).
2. Disconnect the steering angle sensor connector.
3. Measure the resistance between the terminal CANL of the steering angle sensor wire harness side connector and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure the resistance between the terminal CANH of the steering angle sensor wire harness side connector and CG of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 29: Disconnecting Junction Connector (J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: Go to next step
CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - JUNCTION CONNECTOR (J17))
1. Disconnect the junction connector (J17).
2. Disconnect the yaw rate sensor connector.
3. Measure the resistance between the terminal CANL of the yaw rate sensor wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or more
4. Measure the resistance between the terminal CANH of the yaw rate sensor wire harness side connector and BAT of the DLC3.
  OK:
  
  Resistance: 1 MΩ or higher
Fig 30: Checking Harness & Connector (Yaw Rate Sensor & Junction Connector J17)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK:
3. IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT CONDITION OF EACH CONNECTION