Daewoo CIELO EURO III Manual page 462

1F – 292 ENGINE CONTROLS
WSSD ROUGH ROAD SYSTEM FAULT (1.5L SOHC)
Circuit Description
The Engine Control Module (ECM) determines linear
wheel speed excessive variation. The wheel speed vari-
ation test detects at least one missing edge from the
wheel speed sensor signal.
Conditions for Setting the DTC
D DTCs P0106, P0107, P0108, P0117, P0118, P0122,
P0123, P0125, P0201, P0202, P0203, P0204,
P0300, P0351, P0352, P0402, P0404, P1404, P0405
and P0406 are not set.
D Coolant temperature is greater than or equal to 60_C
(140_F).
D Vehicle voltage is between 11 and 16 volts.
D Engine state is run.
Action Taken When the DTC Sets
D The Malfunction Indicator Lamp (MIL) will not illumi-
nate.
D The ECM will store conditions which were present
when the DTC set as Failure Records data only. This
information will not be stored as Freeze Frame data.
D A history DTC is stored.
Conditions for Clearing the MIL/DTC
D A history DTC will clear after 40 consecutive warm-up
cycles without a fault.
D The DTC(s) can be cleared by using the scan tool.
Diagnostic Aids
DIAGNOSTIC TROUBLE CODE (DTC) P1396
Check for the following conditions:
D Poor connection at the ECM – Inspect the har-
ness connections for backed-out terminals, improper
mating, broken locks, improperly formed or damaged
terminals, and poor terminal-to-wire connection.
D Damaged harness – Inspect the wiring harness for
damage. If the harness appears to be OK, observe
the G sensor display on the scan tool while moving
connectors and wiring harnesses related to the sen-
sor. A change in the display will indicate the location
of the fault.
An open signal circuit of open PWM serial data line be-
tween the ECM and the EBCM will be the cause of this
DTC.
Test Description
The number(s) below refer to specific step(s) on the
diagnostic table.
1. On-Board Diagnostic (EOBD) System Check
prompts the technician to complete some basic
checks and store the freeze frame and failure re-
cords data on the scan tool if applicable. This
creates an electronic copy of the data taken when
the malfunction occurred. The information is then
stored on the scan tool for later reference.
6. The replacement ECM must be reprogrammed. Re-
fer to the latest Techline procedure for ECM repro-
gramming.
KAA1F390
DAEWOO T-154 BL2,3