Acura NSX 1991 Manual page 543

Main Menu
ABS Control Unit
Fail-Safe Relays/Motor Relay
Inspection
1. Check for continuity between terminals
There should be no continuity.
2. Connect a 12 V battery across terminals
There should be continuity between terminals
and
Table of Contents
Pulsers/Sensors
and
and
Inspection
1. Check the pulser for chipped or damaged teeth.
2. Measure air gap between the sensor and pulser all
the way around while rotating the driveshaft by
hand.
(A) - (B) = Standard: 0.4-1.0 mm
(0.02-0.04 in.)
NOTE: If the gap exceeds 1.0 mm (0.04 in), the
probability is a distorted knuckle which should be
replaced.
PULSER
KNUCKLE
SENSOR