Daewoo MATIZ Service Manual page 272

1F – 174 ENGINE CONTROLS
DIAGNOSTIC TROUBLE CODE (DTC) – P1385 ROUGH ROAD SENSOR CIRCUIT
Circuit Description
The VR sensor is used to detecting the road situation.
By sensing difference of wheel rotation duration caused
by bumps or potholes in the road, the Engine Control
Module (ECM) can determine if the changes in crank-
shaft speed are due to engine misfire or are driveline in-
duced. If the VR sensor detects a rough road condition,
the ECM misfire detection diagnostic will be de-acti-
vated.
Conditions for Setting the DTC
D Vehicle speed is higher than 10km/h(6.21mph).
D No Vehicle Speed Sensor error not set.
D VR sensor output signal is higher than 0.26.
D VR sensor output signal is not change for 30 sec-
onds.
FAULT (NON ABS)
Action Taken When The DTCs Sets
D The Malfunction Indicator Lamp (MIL) will not illumi-
nate.
D The ECM will store conditions which were present
when the DTC was set as Failure Records data only.
D This information will not be stored in the Freeze
Frame data.
Conditions for Clearing the MIL/DTC
D A history DTC will clear after 40 consecutive warm-up
cycles without a fault.
D DTC(s) can be cleared by using the scan tool.
D Disconnecting the ECM battery feed for more than 10
seconds.
MAA1F210
DAEWOO M-150 BL2