Acceleration/Deceleration Sensor: Service and Repair

A: REMOVAL AND INSTALLATION
1. Turn ignition switch to OFF.
2. Remove console box.
3. Disconnect connector from G sensor.





4. Remove G sensor from body.
5. To install, reverse the removal procedure.

CAUTION: Do not drop or bump G sensor.

B: INSPECTION WITH CIRCUIT TESTER
27B1: Check G Sensor
1. Turn ignition switch to OFF.
2. Remove G sensor from vehicle.
3. Connect connector to G sensor.
4. Turn ignition switch to ON.





5. Measure voltage between G sensor connector terminals.

Connector & terminal (P11) No. 2 (+)-No. 3 (-)
CHECK: Is the voltage 2.3+0.2 V when G sensor is horizontal?
Yes: Go to step 27B2
NO: Replace G sensor.

27B2: CHECK G SENSOR





Measure voltage between G sensor connector terminals.

Connector & terminal (P11) No. 2 (+)-No. 3 (-)
CHECK: Is the voltage 3.9+/-0.2 V when G sensor is inclined forwards to 90°?
YES: Go to step 27B3
NO: Replace G sensor.

27B3: CHECK G SENSOR





Measure voltage between G sensor connector terminals.

Connector & terminal (P11) No. 2 (+)-No. 3 (-)
CHECK: Is the voltage 0.7+0.2 V when G sensor is inclined backwards to 90°?
YES: G sensor is normal.
NO: Replace G sensor.


C: INSPECTION WITH SELECT MONITOR
27C1: CHECK G SENSOR
1. Turn ignition switch to OFF.
2. Connect select monitor connector to data link connector.
3. Turn select monitor into {ABS/TCS} mode.
4. Set the display in the {Current Data Display & Save} mode.
5. Read the G sensor output voltage.

CHECK: Is the indicated reading 2.3+/-0.2 V when the vehicle is in horizontal position?
YES: Go to step 27C2.
NO: Replace G sensor.

27C2: CHECK G SENSOR
1. Remove console box.





2. Remove G sensor from vehicle. (Do not disconnect connector.)
3. Read the select monitor display.

CHECK: Is the indicated reading 3.9+/-0.2 V when G sensor is inclined forwards to 90° ?
YES: Go to step 27c3
NO: Replace G sensor.






27C3: CHECK G SENSOR
Read the select monitor display.

CHECK: Is the indicated reading 0.7+0.2 V when G sensor is inclined backwards to 90°?
YES: G sensor is normal.
NO: Replace G sensor.