Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

CHECK RESISTANCE (CANL - CANH OF DLC3)

Fig 1: Identifying Terminals CANL & CANH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

RESISTANCE

A	54 to 66 Ω
B	1 MΩ or more

A: Go to step 3 .
B: Go to next step.

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 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).
  
  Fig 2: Identifying DLC3 & Junction Connector (J17)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Resistance: 1 Ω or less
1. OK: Go to step 3
2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR AND GO TO STEP 3
CHECK HARNESS AND CONNECTOR (CANL - CANH OF YAW RATE SENSOR CONNECTOR)
1. Connect the junction connector (J17).
2. Disconnect the yaw rate sensor connector.
3. Measure the resistance between the terminal CANL and CANH of the yaw rate sensor wire harness side connector.
  
  Fig 3: Identifying Terminals CANH & CANL Of Yaw Rate Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Resistance: 1 MΩ or higher
1. OK: Go to step 5 .
2. NG: Go to next step.
CHECK JUNCTION CONNECTOR (J17)
1. Disconnect the junction connector (J17)
2. Measure the resistance between the terminal 1 and 4 of the junction connector.
  OK:
  
  Resistance: 1 Ω or less
3. Measure the resistance between the terminal 12 and 15 of the junction connector.
  
  Fig 4: Identifying Terminals CANH & CANL Of Junction Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Resistance: 1 Ω or less
1. NG: REPLACE JUNCTION CONNECTOR
2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (YAW RATE SENSOR CONNECTOR)
1. Disconnect the yaw rate sensor connector.
2. Turn the ignition switch ON.
3. Measure the voltage between terminal IG and GND of the yaw rate sensor connector.
  
  Fig 5: Identifying Terminals GND & IG
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Voltage: 10 to 14 V
1. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. NG: Go to next step.
CHECK HARNESS AND CONNECTOR (YAW RATE SENSOR - BODY GROUND)
1. Disconnect the yaw rate sensor connector.
2. Measure the resistance between terminal GND of the yaw rate sensor connector and body ground.
  
  Fig 6: Identifying Terminals GND Of Yaw Rate Sensor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Resistance: 1 Ω or less
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: REPLACE YAW RATE SENSOR