Deceleration Sensor Signal Check (4WD)

Turn ignition off. Using special tool (09843-18040), connect terminals Ts and CG of DLC3. See Figure. Start engine. Ensure ABS warning light flashes in 0.13 second intervals. If ABS warning flashes, go to next step. If ABS warning light does not flash, see ABS WARNING LIGHT under SYSTEM TESTS.
Block front wheels. Using a floor jack, position jack under center of rear axle. Slowly raise rear of vehicle about 36.2-38.6 in. (760-820 mm) from the ground. Measure from ground to lower lip of rear bumper. See Fig 1. Check ABS warning light. If ABS warning light is flashing, check deceleration sensor installation. Repair as necessary. If sensor installation is okay, replace deceleration sensor. After replacing sensor, go to next step.
Slowly lower rear of vehicle. Block rear wheels. Position floor jack under center of front axle. Slowly raise front of vehicle about 29.9-32.3 in. (760-820 mm). Measure from ground to lower lip of front bumper. See Fig 2. Check ABS warning light. If ABS warning light is flashing, check deceleration sensor installation. If sensor installation is okay, replace deceleration sensor. After replacing sensor, go to next step.
Slowly lower front of vehicle. Drive vehicle straight-ahead at about 12 MPH or faster, then lightly apply brakes. Observe ABS warning light. Drive vehicle at about 12 MPH or faster, then moderately apply brakes. Observe ABS warning light. Drive vehicle again at about 12 MPH or faster and apply brakes strongly. Observe ABS warning light.
ABS warning light should be flashing about 0.13 second interval every time brakes are applied. If ABS warning light flashes as specified, deceleration sensor is okay. If ABS warning light is not flashing as specified, check deceleration sensor installation. If sensor installation is okay, replace deceleration sensor. After replacing sensor, retest system.

Fig 1: Jacking Up & Measuring Rear Of Vehicle

Fig 2: Jacking Up & Measuring Front Of Vehicle