Tundra 4WD V8-5.7L (3UR-FE) (2007)
Component with harness connected: (4WD Control ECU)
(a)
Check the harness and connector (ECU - battery and body ground).
(1) Measure the voltage and resistance according to the value(s) in the table below.
Standard voltage
If there is a malfunction, inspect the harness or connector. If the harness is malfunctioning, repair or replace harness or connector. If the
harness or connector is normal, replace the 4WD control ECU.
Standard resistance
If there is a malfunction, repair or replace the harness or connector.
(b) Check the harness and connector (switch - ECU).
(1) Disconnect the A25 ECU connector.
(2) Disconnect the L1 switch connector.
(3) Measure the resistance according to the value(s) in the table below.