PRE-RELEASE
DTC 56 DETECTION OF G SENSOR STICK
| DTC 56 DETECTION OF G SENSOR STICK |
DIAGNOSIS:
Faulty G sensor output voltage
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
CHECK ALL FOUR WHEELS FOR FREE TURNING.
Have the wheels been turned freely such as when vehicle is lifted up, or operated on a rolling road?
| Yes |
The ABS is normal. Erase the DTC.
| No |
CHECK OUTPUT OF G SENSOR USING Vehicle Diagnostic Interface.
Select “Current data display & Save” on the Vehicle Diagnostic Interface.Read the Vehicle Diagnostic Interface display.
Is the G sensor output on monitor display −1.25 — 1.25 m/s when the vehicle is in horizontal position?
| Yes |
| No |
CHECK OUTPUT OF G SENSOR USING Vehicle Diagnostic Interface.
Turn the ignition switch to OFF.Remove the console box.
Remove the G sensor from vehicle. (Do not disconnect the connector.)
Turn the ignition switch to ON.
Select “Current data display & Save” on the Vehicle Diagnostic Interface.
Read the Vehicle Diagnostic Interface display.
Is the voltage 8.7 — 11.3 m/s when G sensor is inclined forwards to 90°?
| Yes |
| No |
Replace the G sensor.
CHECK OUTPUT OF G SENSOR USING Vehicle Diagnostic Interface.
Read the Vehicle Diagnostic Interface display.Is the voltage −11.25 — 8.75 m/s when G sensor is inclined backwards to 90°?
| Yes |
| No |
Replace the G sensor.
CHECK POOR CONTACT IN CONNECTORS.
Turn the ignition switch to OFF.Is there poor contact in connector between ABSCM&H/U and G sensor?
| Yes |
Repair the connector.
| No |
CHECK ABSCM&H/U.
Connect all connectors.Erase the memory.
Perform the inspection mode.
Read out the DTC.
Is the same DTC as in current diagnosis still being output?
| Yes |
Replace the ABSCM&H/U.
| No |
CHECK ANY OTHER DTC APPEARANCE.
Are other DTCs being output?
| Yes |
Proceed with the diagnosis corresponding to DTC.
| No |
A temporary poor contact.
CHECK OPEN CIRCUIT IN G SENSOR OUTPUT HARNESS AND GROUND HARNESS.
Turn the ignition switch to OFF.Disconnect the connector from ABSCM& H/U.
Measure the resistance between ABSCM&H/U connector terminals.
Connector & terminal
(B301) No. 10 — No. 21:
Is the resistance 5.0 — 5.6 kΩ?
| Yes |
| No |
Repair the harness/connector between G sensor and ABSCM&H/U.
CHECK G SENSOR.
Remove the console box.Remove the G sensor from vehicle.
Connect the connector to G sensor.
Connect the connector to ABSCM&H/U.
Turn the ignition switch to ON.
Measure the voltage between G sensor connector terminals.
Connector & terminal
(B292) No. 2 (+) — No. 3 (−):
Is the voltage 2.1 — 2.5 V when G sensor is in horizontal position?
| Yes |
| No |
Replace the G sensor.
CHECK G SENSOR.
Measure the voltage between G sensor connector terminals.Connector & terminal
(B292) No. 2 (+) — No. 3 (−):
Is the voltage 3.7 — 4.1 V when G sensor is inclined forwards to 90°?
| Yes |
| No |
Replace the G sensor.
CHECK G SENSOR.
Measure the voltage between G sensor connector terminals.Connector & terminal
(B292) No. 2 (+) — No. 3 (−):
Is the voltage 0.5 — 0.9 V when G sensor is inclined backwards to 90°?
| Yes |
| No |
Replace the G sensor.
CHECK ABSCM&H/U.
Turn the ignition switch to OFF.Connect all connectors.
Erase the memory.
Perform the inspection mode.
Read out the DTC.
Is the same DTC as in current diagnosis still being output?
| Yes |
Replace the ABSCM&H/U.
| No |
CHECK ANY OTHER DTC APPEARANCE.
Are other DTCs being output?
| Yes |
Proceed with the diagnosis corresponding to DTC.
| No |
A temporary poor contact.
