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DIAGNOSTICS
ECD SYSTEM (1ND--TV)
05--97
COROLLA Supplement (RM1129E)
DTC
P0236
TURBO/SUPER CHARGER BOOST SENSOR
”A” CIRCUIT RANGE/PERFORMANCE
DTC
P0237
TURBO/SUPER CHARGER BOOST SENSOR
”A” CIRCUIT LOW
DTC
P0238
TURBO/SUPER CHARGER BOOST SENSOR
”A” CIRCUIT HIGH
CIRCUIT DESCRIPTION
The manifold absolute pressure sensor detects the intake manifold pressure. The ECM determines the basic
injection duration and injection advance timing based on the voltage output from the manifold absolute pres-
sure sensor.
DTC No.
DTC Detection Condition
Trouble Area
P0236
The manifold absolute pressure sensor output differs from
atmospheric pressure sensor output by more than threshold for
2 seconds or more
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
S
Open or short in manifold absolute pressure sensor circuit
S
Manifold absolute pressure sensor
S
ECM
P0237
P0238
Open or short in manifold absolute pressure sensor circuit for
2 seconds or more
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
S
Open or short in manifold absolute pressure sensor circuit
S
Manifold absolute pressure sensor
S
ECM
HINT:
S
DTC P0236 is set while idling for 10 seconds or more.
S
DTC P0237 is set when the ignition switch is in the ON position.
S
DTC P0238 is set when the ignition switch is in the ON position.
S
When DTCs P0236, P0237 and/or P0238 are set, check the intake manifold pressure by selecting the
following menu items on the intelligent tester ll: Powertrain / Engine and ECT / Data List / PIM.
Reference:
Intake Manifold Pressure (kPa)
Malfunction
Approximately 0
S
Short in PIM circuit
250 or more
S
Open or short in VC circuit
S
Open in PIM circuit
S
Open in E2 circuit
05MSF--01
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E