Open in CAN Main Bus Line: Procedure

1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

   NOTE:

   When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION .

NEXT: Go to next step 

1. Disconnect the E86 CAN junction connector connector.
2. Measure the resistance according to the value(s) in the table below.
   Fig 1: CAN Junction Connector And DLC3 Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E1-6 (CANH) - E86-4 (CANH)	Ignition switch off	Below 1 Ω
   E1-14 (CANL) - E86-15 (CANL)	Ignition switch off	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	DLC3
   *b	Rear view of wire harness connector (to CAN Junction Connector)

NG → REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CAN-H, CAN-L) 

OK: Go to next step 

Fig 2: Checking CAN Bus Main Wire (CAN Junction Connector - ECM)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E86-1 (CANH) - E86-12 (CANL)	Ignition switch off	108 to 132 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to CAN Junction Connector)

NG → See step   5 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 3: Checking CAN Main Bus Line E86 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E86-3 (CANH) - E86-14 (CANL)	Ignition switch off	108 to 132 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to CAN Junction Connector)

NG → See step   7 

OK → REPLACE CAN JUNCTION CONNECTOR 

1. Reconnect the E86 CAN junction connector connector.

NEXT: Go to next step 

1. Disconnect the E77 ECM connector.
   Fig 4: Checking CAN Bus Wire (ECM Main Wire)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E77-32 (CANH) - E77-31 (CANL)	Ignition switch off	108 to 132 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to ECM)

NG → REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN-H, CAN-L) 

OK → See step   10 

1. Reconnect the E86 CAN junction connector connector.

NEXT: Go to next step 

1. Disconnect the E14 combination meter connector.
   Fig 5: Checking CAN Bus Wire (Combination Meter Assembly) (Combination Meter ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E14-10 (CANH) - E14-9 (CANL)	Ignition switch off	108 to 132 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Combination Meter Assembly (Combination Meter ECU))

NG → REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN-H, CAN-L) 

OK → See step   9