Dtc P0335, P0336, Or P0338 - Suzuki XL7 2007 Service Manual

1A-105 Engine General Information and Diagnosis:

DTC P0335, P0336, or P0338

Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
• Review "Strategy Based Diagnosis: " for an overview of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle Diagnostic Information: " provides an overview of each diagnostic
category.
DTC Descriptors
DTC P0335: Crankshaft Position (CKP) Sensor Circuit
DTC P0336: Crankshaft Position (CKP) Sensor Performance
DTC P0338: Crankshaft Position (CKP) Sensor Circuit High Duty Cycle
Diagnostic Fault Information
Circuit
5-Volt Reference
CKP Sensor Signal
Low Reference
Circuit/System Description
The crankshaft position (CKP) sensor is located on the
rear of bank 1 of the engine block. The CKP sensor is a
hall effect switch that works in conjunction with a 58X
reluctor wheel that is attached to the crankshaft. Each
tooth on the reluctor wheel is spaced 6 degrees apart
with one span having a 12 degree space. The engine
control module (ECM) uses the 12 degree space to
determine top dead center (TDC) for cylinders 1 and 4.
The ECM determines when cylinder 1 is on the
compression stroke by monitoring the CKP sensor and
the camshaft position (CMP) sensors. The ECM can
synchronize the ignition timing, fuel injector timing, and
spark knock control based on the CKP sensor and the
CMP sensor inputs.
Conditions for Running the DTC
• The engine is cranking or operating.
• The ECM has detected more than 12 camshaft
revolutions.
• The DTCs run continuously once the above conditions
are met for more than 5 seconds.
Conditions for Setting the DTC
P0335
• The ECM does not detect a signal from the CKP
sensor.
OR
• The ECM detects a CKP signal with out reference
pulse for more than 3 revolutions.
• Either condition exists for more than 4 seconds or a
cumulative of 50 seconds.
Short to Open/High
Ground Resistance
P0122, P0222,
P0335, P0698, P0335
P2127
P0122, P0222,
P0335, P0698, P0335
P2127
P0335 P0335
P0336
• The ECM re-syncs the engine position 6 or more
times during an ignition cycle.
OR
• The ECM detects 14 or more interruptions in the
engine speed signal during an ignition cycle.
• Either condition exists for more than 4 seconds or a
cumulative of 50 seconds.
P0338
The ECM detects a difference of more than 8 teeth
between reference gap position pulses for 4 consecutive
crankshaft revolutions in which the same number of
pulses are detected each crankshaft revolution or a
cumulative of 50 seconds.
Action Taken When the DTC Sets
DTCs P0335, P0336, and P0338 are Type A DTCs.
Conditions for Clearing the DTC
DTCs P0335, P0336, and P0338 are Type A DTCs.
Diagnostic Aids
• The following conditions could also set the DTCs:
– Physical damage to the CKP sensor or the reluctor
wheel
– Excessive play or looseness of the CKP sensor or
the reluctor wheel
– Improper installation of the CKP sensor or the
reluctor wheel
– Foreign material passing between the CKP sensor
and the reluctor wheel
– Excessive air gap between the CKP sensor and the
reluctor wheel
Signal
Short to Voltage
Performance
P0335, P0338, P0336, P0698,
P0699 P0699
P0335, P0338, P0336, P0698,
P0699 P0699
— P0336