1. Remove the rear accessory socket..
2. Connect the tester probe to the position shown in the figure and verify that there is continuity.

If it cannot be verified, replace the rear accessory socket..
Front Accessory Socket Removal/Installation
Rear Accessory Socket Removal/InstallationRear Upper Arm Removal/Installation [2 Wd]
WARNING:
Verify that the crossmember is securely supported by a jack. If the rear
crossmember falls off, it can cause serious injury or death, and damage to the
vehicle.
CAUTION:
Performing the following procedures without first removing the rear ABS wheel-speed
...
Control Valve Body [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The control valve body controls the hydraulic pressure generated by the oil
pump by each solenoid valve. In addition, the oil passages which introduce hydraulic
pressure to the pistons for each clutch and brake is formed by the switching
of each built-in shift valve. ...
Disc Pad (Front) Replacement
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
3. After installation, depress the brake pedal a few times, rotate the wheel
by hand, and verify that the brake does not drag.
1
Bolt
2
Caliper
...