PRE-RELEASE
DTC 56 ABNORMAL G SENSOR HIGH µ OUTPUT
| DTC 56 ABNORMAL G SENSOR HIGH µ OUTPUT |
DIAGNOSIS:
Faulty G sensor output voltage
TROUBLE SYMPTOM:
ABS does not operate.
WIRING DIAGRAM:
CHECK OUTPUT OF G SENSOR USING Vehicle Diagnostic Interface.
Select “Current data display & Save” on the Vehicle Diagnostic Interface.Read G sensor output on the Vehicle Diagnostic Interface display.
Is the voltage −1.25 — 1.25 m/s when G sensor is in horizontal position?
| Yes |
| No |
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 GROUND SHORT OF HARNESS.
Measure the resistance between ABSCM&H/U connector and chassis ground.Connector & terminal
(B301) No. 10 — Chassis ground:
Is the resistance more than 1 MΩ?
| Yes |
| No |
| • |
Repair the harness between
G sensor and ABSCM&H/U.
|
|
| • |
Replace the 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.
