Section 08 ENGINE MANAGEMENT (4-TEC)
Subsection 03 (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...
P0267 — —
Inj. # 3
short-circuit to
ground or open
circuit
15 Flash
CHK
ENG
N Y N
Fault is
recovered
Possible cause:
Damaged injector, damaged circuit wires, damaged connector or damaged ECM output pins.
Service action:
Check for 11.4 to 12.6 ohms between engine connector pin 3 and ECM connector pin 14.
Check for 12 volts on pin 2 of injector connector.
P0268 — —
Inj. # 3
short-circuit to
12 V
15 Flash
CHK
ENG
N Y N
Fault is
recovered
Possible cause:
Damaged injector, damaged circuit wires, damaged connector or damaged ECM output pins.
Service action:
Check for 11.4 to 12.6 ohms between engine connector pin 3 and ECM connector pin 14.
Check for 12 volts on pin 2 of injector connector.
P0326 — —
Knock sensor out
of range
15 Flash
CHK
ENG
N Y N Key is removed
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector or damaged ECM output pins.
Service action:
Bring engine to 5000 RPM. If fault code appears then check for approximately 5 Mohms between system circuits A-9 and A-23.
P0336 — —
Crank position
sensor - wrong
engine RPM
detected
15 Flash
CHK
ENG
— — — —
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector, damaged ECM pins or damaged tooth wheel.
Service action:
For the CPS, check for 190 to 290 ohms between terminals A-5 and A-19 of ECM connector. For the CAPS, refer to camshaft position sensor.
Check continuity for circuits A-20, A-34 and terminal 4 on engine connector.
P0337 — —
No CPS signal,
but CAPS signal
detected
15 Flash
CHK
ENG
— — — —
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector, damaged ECM pins or damaged tooth wheel.
Service action:
Check for 190 to 290 ohms between terminals A-5 and A-19 of ECM connector.
Check for 2 volts AC while crancking the engine.
P0337 — —
No CPS signal,
but CAPS signal
detected
15 Flash
CHK
ENG
N N N
Fault is
recovered
Possible cause:
Damaged sensor, damaged circuit wires, damaged connector, damaged ECM pins or damaged tooth wheel.
Service action:
Check for 190 to 290 ohms between terminals A-5 and A-19 of ECM connector.
452 smr2004-Complete Line Up
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