Four Wheel Drive Selector Switch: Testing and Inspection

VF4BM TRANSFER / 4WD / AWD: 4WD CONTROL SWITCH: ON-VEHICLE INSPECTION

1. INSPECT TRANSFER POSITION SWITCH

(a) Check the harness and connector (four wheel drive control ECU - battery and body ground).

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





Standard voltage:





Text in Illustration





If the result is not as specified, inspect the harness, fuse or connector. If the harness or connector is malfunctioning, repair or replace the harness or connector. If the harness or connector is normal, replace the four wheel drive control ECU Removal.

If there is a malfunction, repair or replace the harness or connector.

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

Standard resistance:





(b) Check the harness and connector (transfer position switch - four wheel drive control ECU).

(1) Disconnect the F47 ECU connector.

(2) Disconnect the F73 switch connector.

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





Standard resistance:





Text in Illustration





If the result is not as specified, repair or replace the harness or connector.

(c) Check the transfer position switch.

(1) Turn the ignition switch off.

(2) Connect the F73 switch connector.

(3) Connect the F47 ECU connector.

(4) Measure the voltage according to the value(s) in the table below.





Standard voltage:





Text in Illustration





If the result is not as specified, check the four wheel drive control ECU.

(d) Check the four wheel drive control ECU.

(1) Disconnect the F73 switch connector.

(2) Measure the voltage according to the value(s) in the table below.





Standard voltage:





Text in Illustration





If the voltage is not as specified, replace the four wheel drive control ECU Removal. If the voltage is normal, replace the transfer position switch Removal.