Section 04 ENGINE MANAGEMENT (1503 4-TEC)
Subsection 02 (DIAGNOSTIC PROCEDURES)
RESPONSIBLE MODULE
FAULT
CODE INFORMATION
CENTER
MPEM
ECM
BEEPER
CODE
WARNING
LIGHT
MESSAGE
DISPLAYED
(INFO CTR)
FAULT
DETECTED
WHILE ENGINE
NOT RUNNING
FAULT
DETECTED
WHILE ENGINE
RUNNING
LIMP
HOME
MODE
NORMAL
OPERATION
RESUME
WHEN...
—
—
Manifold
atmospheric
pressure sensor
shorted to 12 V
or open circuit
15
Flash
CHK
ENG
N
Y
N
Fault is
recovered
P0108
—
—
Manifold
barometric
pressure sensor
open circuit or
shorted to 12 V
15
Flash
CHK
ENG
Y
N
N
Fault is
recovered
Possible cause:
Sensing port dirty or blocked.
Sensor failure or unexpected reading at idle.
Sensor fallen out of housing or leaking inlet.
Service action:
Check system circuits A-12, A-28 and A-40.
Make sure that the sensor housing is correctly inserted into the manifold.
Check sensor connector for:
a) 5 volts on pin 1.
b) 0 volt on pin 2.
c) 0 volt on pin 3.
P0111
—
—
Intake manifold
temperature
sensor functional
problem
15
Flash
CHK
ENG
N
Y
N
Fault is
recovered
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector or damaged ECM pins.
Service action:
Check the sensor for approximately 2280 to 2736 ohms at 19 to 21°C (66 to 70°F).
Check for approximately 2280 to 2736 ohms at 19 to 21°C (66 to 70°F) between ECM connector pins 7 and 21.
P0112
—
—
Intake manifold
temperature
sensor shorted
to ground
15
Flash
CHK
ENG
N
Y
N
Fault is
recovered
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector or damaged ECM pins.
Service action:
Check the sensor for approximately 2280 to 2736 ohms at 19 to 21°C (66 to 70°F).
Check for approximately 2280 to 2736 ohms at 19 to 21°C (66 to 70°F) between ECM connector pins 7 and 21.
P0113
—
—
Intake manifold
temperature
sensor shorted
to 12 V or open
circuit
15
Flash
CHK
ENG
N
Y
N
Fault is
recovered
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector or damaged ECM pins.
Service action:
Check the sensor for approximately 2280 to 2736 ohms at 19 to 21°C (66 to 70°F).
Check for approximately 2280 to 2736 ohms at 19 to 21°C (66 to 70°F) between ECM connector pins 7 and 21.
86
smr2005-012
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