Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN BUS LINE FOR SHORT TO +B (DLC3 SUB BUS LINE)
1. Disconnect the DLC3 sub bus line connector (J50) from the CAN J/C.
  
  Fig 1: Wiring Diagram - CAN Bus Line Short To +B
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE:
  - Before disconnecting the connector, make a note of where it is connected.
  - Reconnect the connector to its original position.
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 2: Disconnecting DLC3 Sub Bus Line Connector (J50) From CAN J/C
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 3: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE DLC3 SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
OK: Go to next step.
CONNECT CONNECTOR
1. Reconnect the DLC3 sub bus line connector (J50) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (SKID CONTROL ECU SUB BUS LINE)
1. Disconnect the skid control ECU sub bus line connector (J47) from the CAN J/C.
  NOTE:
  - Before disconnecting the connector, make a note of where it is connected.
  - Reconnect the connector to its original position.
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 4: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Disconnecting Skid Control ECU Sub Bus Line Connector (J47) From CAN J/C
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 6: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Go to step 10
NG: Go to next step.
CONNECT CONNECTOR
1. Reconnect the skid control ECU sub bus line connector (J47) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (YAW RATE SENSOR SUB BUS LINE)
1. Disconnect the yaw rate sensor sub bus line connector (J48) from the CAN J/C.
  NOTE:
  - Before disconnecting the connector, make a note of where it is connected.
  - Reconnect the connector to its original position.
  Fig 7: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 8: Disconnecting Yaw Rate Sensor Sub Bus Line Connector (J48) From CAN J/C
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 9: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Go to step 12
NG: Go to next step.
CONNECT CONNECTOR
1. Reconnect the yaw rate sensor sub bus line connector (J48) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (STEERING ANGLE SENSOR SUB BUS LINE)
1. Disconnect the steering angle sensor sub bus line connector (J49) from the CAN J/C.
  NOTE:
  - Before disconnecting the connector, make a note of where it is connected.
  - Reconnect the connector to its original position.
  Fig 10: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 11: Disconnecting Steering Angle Sensor Sub Bus Line Connector (J49) From CAN J/C
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 12: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Go to step 14
NG: Go to next step.
CONNECT CONNECTOR
1. Reconnect the steering angle sensor sub bus line connector (J49) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (ECM MAIN BUS LINE)
1. Disconnect the ECM connector (E7).
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 13: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 14: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE ECM ( ECM (1GR-FE) (1GR-FE) OR ECM (2UZ-FE) (2UZ-FE))
NG: Go to next step.

REPAIR OR REPLACE ECM MAIN BUS LINE OR CONNECTOR (CAN-H, CAN-L)
CONNECT CONNECTOR
1. Reconnect the skid control ECU sub bus line connector (J47) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (SKID CONTROL ECU SUB BUS LINE)
1. Disconnect the skid control ECU connector (S28).
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 15: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 16: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE MASTER CYLINDER SOLENOID (SEE OVERHAUL )
NG: Go to next step.

REPAIR OR REPLACE SKID CONTROL ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
CONNECT CONNECTOR
1. Reconnect the yaw rate sensor sub bus line connector (J48) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (YAW RATE SENSOR SUB BUS LINE)
1. Disconnect the yaw rate sensor connector (Y1).
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 17: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 18: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE YAWRATE SENSOR
NG: Go to next step.

REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)
CONNECT CONNECTOR
1. Reconnect the steering angle sensor sub bus line connector (J49) to the CAN J/C.
NEXT: Go to next step.
CHECK CAN BUS LINE FOR SHORT TO +B (STEERING ANGLE SENSOR SUB BUS LINE)
1. Disconnect the steering angle sensor connector (S11).
2. Measure the resistance according to the value (s) in the table below.
  
  Fig 19: Identifying D1 Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 20: D1 Connector Terminals Resistance Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE STEERING ANGLE SENSOR ( STEERING SENSOR )
NG: Go to next step.

REPAIR OR REPLACE STEERING ANGLE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)