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...
P1104
—
—
Throttle position
sensor adaptation
canceled
15
Flash
CHK
ENG
—
—
—
—
Possible cause:
No initialisation after throttle body or ECM replacement or throttle idle stop drifted.
Service action:
Check cable adjustment.
Check idle stop for wear.
Make sure that the throttle plate is against the throttle stop.
Check throttle angle at idle.
Reset closed TPS.
P1148
—
—
Fuel injector 1, 2
or 3 - safety fuel
cut off detected
15
Off
CHK
ENG
—
—
—
—
Possible cause:
Idle bypass valve wrong reference, TPS adaptation failure, TPS failure or battery voltage out of range.
Service action:
Key on and off.
Reset closed TPS.
Check battery voltage. Replace TPS.
Replace idle bypass valve.
P1200
—
—
Blow by valve
shorted to ground
or open circuit
5
Flash
CHK
ENG
Y/N
Y
5000
Fault is
recovered
Possible cause:
Blow-by valve failure, damaged circuit wires, damaged connector, damaged ECM pins or ECM failure.
Service action:
Check for 1.27 to 2.47 ohms on component.
P1201
—
—
Blow by valve
shorted to 12 V
5
Flash
CHK
ENG
N
N
N
N/A
Possible cause:
Blow-by valve failure, damaged circuit wires, damaged connector, damaged ECM pins or ECM failure.
Service action:
Check for 1.27 to 2.47 ohms on component.
P1202
—
—
Oil tank
pressure switch
implausible or
blow-by valve
still closed
5
Flash
CHK
ENG
N
N
N
N/A
Possible cause:
Damaged oil pressure switch, blow-by valve failure, damaged circuit wires, damaged connector or damaged ECM pins.
Service action:
Check for 1.27 to 2.47 ohms between terminals.
Check if TOPS is connected to wiring harness.
Check resistance at 0 RPM and above 3500 RPM. At high RPM the resistance should be close to 0 ohm.
Check for 12 volts on pin 1 of the blow-by valve.
P1203
—
—
Unused
—
—
—
—
—
—
—
smr2005-012
97
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