1F–250 ENGINE CONTROLS
DAEWOO M-150 BL2
MAA1F300
DIAGNOSTIC TROUBLE CODE (DTC) – P1535 EVAPORATOR TEMPERATURE
SENSOR HIGH VOLTAGE
Circuit Description
A semiconductor which resistance is noticeably
changed as the change of temperature. When the refrig-
erant temperature of the evaporator drops to 0°C (0°F)
and below, the evaporator cores get stuck with frost or
ice, reducing the airflow, lowering the cooling capacity.
The thermistor is a sensor which is used to prevent from
frosting or icing. The thermistor is installed on the evap-
orator.
Conditions for Setting the DTC
D A short to battery voltage condition exists and is pres-
ent for more the 2 seconds.
Action Taken When the DTC Sets
D The ECM will not illuminate the Malfunction Indicator
Lamp (MIL).
D A history DTCs is stored.
D The ECM will record operating conditions at the time
the diagnostic fails. This information will be stored
Failure Records buffers.
D The A/C compressor operation will be disabled while
the low voltage indication exists.
D Update the fail record each time the diagnostic test
fail.
Conditions for Clearing the MIL/DTC
D A history DTC will clear after 40 consecutive warm-up
cycles without a fault.
D Usisng the scan tool can clear DTC(s).
D Disconnecting the ECM battery feed for 10 seconds.
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