Toyota Celica 2005, Repair Manual

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− DIAGNOSTICS ENGINE (2ZZ − GE)
DI − 483
2005 CELICA (RM1131U)
MONITOR DESCRIPTION
If there is no signal from the camshaft position sensor even though the engine is cranking, or if the rotation
of the camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction of the sen-
sor.
MONITOR STRATEGY
Related DTCs
P0340
Camshaft position sensor (Bank 1) range check
or rationality
P0341
Camshaft position sensor (Bank 1) range check
or rationality
Required sensors/components
Main sensors/components Camshaft position sensor
Related sensors/components Crankshaft position sensor, Engine speed sensor
Frequency of operation Continuous
Duration 5 sec.
MIL operation
P0340 case 1 (no signal): 2 driving cycles
P0340 case 2 (mis
− aligned), P0341: Immediate
Sequence of operation None
TYPICAL ENABLING CONDITIONS
Item
Specification
Minimum Maximum
The monitor will run whenever these
DTCs are not present
See page DI − 295
P0340 Case 1 (No signal):
Starter ON
Minimum battery voltage while starter is
ON
− 11 V
P0340 Case 2 (Mis − aligned):
Engine speed 600 rpm −
Starter OFF
P0341:
Starter After OFF to ON timing
Engine revolution angle 720 ° CA
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria Threshold
P0340 Case 1 (No signal):
Camshaft position sensor signal No signal
P0340 Case 2 (Mis − aligned):
Crankshaft/camshaft (judged by comparing the crankshaft position to the camshaft position)
Camshaft position sensor signal: No input in appropriate timing.
P0341:
Crankshaft/Camshaft alignment Mis − aligned
Camshaft position sensor count 12 or more / 720 _ CA (= Engine 2 revolutions)
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