Vehicle Speed Sensor
- Vehicle speed sensor is located on the transaxle. See Figure . Ensure No. 22 (20-amp) fuse in fuse-relay box, located behind kick panel on driver's side, is okay. If fuse is okay, disconnect 3-pin connector at vehicle speed sensor.
- Using ohmmeter, check for continuity between Green
/White wire of 3-pin connector and body ground. If continuity exists, proceed to step 3). If continuity does not exist, check for open circuit in Green
/White between 3-pin connector and ground connection. Ground connection is located on mounting bolt for throttle body.NOTE: Speed sensor is grounded through the ECU to ground connection on mounting bolt for throttle body.
- Turn ignition on. Using voltmeter, measure voltage between Black /Yellow wire of 3-pin connector and body ground. If battery voltage exists, proceed to step 4). If battery voltage does not exist, repair open circuit in Black /Yellow wire between 3-pin connector and No. 22 (20-amp) fuse in fuse-relay box, located behind kick panel on driver's side.
- Using voltmeter, measure voltage between Yellow
/Red
wire of 3-pin connector and body ground. If about 5 volts exist, proceed to step 5). If about 5 volts do not exist, repair open circuit or short circuit to ground in Yellow
/Red
wire. The Yellow
/Red
wire goes to gauge assembly, PGM-FI/AT ECU, cruise control unit, climate control unit and power seat control unit.NOTE: Cruise control unit is located behind kick panel on passenger's side. Climate control unit is located on center of instrument panel. See Figure . Power seat control unit is located below driver's seat.
- Reconnect 3-pin connector on vehicle speed sensor. Raise and support front of vehicle so front wheels can rotate. Using voltmeter, backprobe Yellow /Red wire on 3-pin connector and connect it to body ground.
- Place shift lever in Neutral. Ensure ignition is on. Rotate one front wheel while holding the other front wheel stationary.
- Note that voltage reading pulses from zero volts to about 5 volts. If voltage pulses correctly, speed sensor is okay. If voltage does not pulse correctly, replace vehicle speed sensor.