Inspection Procedure
WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Turn the ignition switch off before measuring the resistances of the CAN main wire and the CAN branch wire.
- After the ignition switch is turned off, check that the key reminder warning system is not in operation.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
- CHECK CAN BUS LINE FOR DISCONNECTION (SKID CONTROL ECU BRANCH WIRE)
- Turn the ignition switch OFF.
- Disconnect the A4 skid control ECU connector.
- Measure the resistance.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester connection Condition Specified Condition A4-11 (CANH) - A4-25 (CANL) Ignition switch OFF 54 to 69 Ω
NG: REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU (CAN-H, CAN-L)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next step.
- CHECK HARNESS AND CONNECTOR (IG1, GND2)
- Disconnect the A4 skid control ECU connector.
- Measure the resistance.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester connection Condition Specified Condition A4-32 (GND2) - Body ground Always Below 1 Ω - Measure the voltage.
Standard voltage
TESTER CONNECTION SPECIFIED CONDITIONTester connection Condition Specified Condition A4-46 (IG1) - Body ground Ignition switch ON 11 to 14 V
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE MASTER CYLINDER SOLENOID