Non-Emissions Related Dtcs; Action Taken When The Dtc Sets - Type C - Suzuki XL7 2007 Service Manual

Non-Emissions Related DTCs

Action Taken When the DTC Sets - Type C

• The control module stores the DTC information into
memory when the diagnostic runs and fails.
• The MIL will not illuminate.
• The control module records the operating conditions
at the time the diagnostic fails. The control module
stores this information in the Failure Records.
• The driver information center, if equipped, may display
a message.
Conditions for Clearing the DTC - Type C
• A current DTC Last Test Failed clears when the
diagnostic runs and passes.
• A history DTC clears after 40 consecutive warm-up
cycles, if no failures are reported by this or any other
non-emission related diagnostic.
• Clear the DTC with a scan tool.
DTC P0008 or P0009
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 P0008: Engine Position System Performance
Bank 1
DTC P0009: Engine Position System Performance
Bank 2
Circuit/System Description
The engine control module (ECM) tests for a
misalignment between both camshafts on one bank of
the engine and the crankshaft. The misalignment would
be at an idler sprocket for either bank or at the
crankshaft. Once the ECM learns the position of both
camshafts on one bank of the engine, the ECM
compares the learned values to a reference value. The
ECM will set a DTC if both learned values for one bank
of the engine are exceeding a calibrated threshold in the
same direction.
Engine General Information and Diagnosis:
Conditions for Running the DTC
• DTCs P0010, P0011, P0013, P0014, P0020, P0021,
P0023, P0024, P0341, P0342, P0343, P0346, P0347,
P0348, P0366, P0367, P0368, P0391, P0392, P0393,
P2088, P2089, P2090, P2091, P2092, P2093, P2094,
and P2095 are not set.
• The engine is operating.
• The ECM has learned the camshaft positions.
• DTC P0008 and P0009 run continuously once the
above conditions are met.
Conditions for Setting the DTC
The ECM detects that both camshafts on either bank of
the engine are mis-aligned with the crankshaft for more
than 4 seconds or a cumulative of 50 seconds.
Action Taken When the DTC Sets
DTC P0008 and P0009 are type B DTCs.
Conditions for Clearing the DTC
DTC P0008 and P0009 are type B DTCs.
Diagnostic Aids
• Inspect the engine for any recent engine mechanical
repairs. An incorrectly installed secondary timing
chain can cause this DTC to set.
• A single failed camshaft actuator or actuator solenoid
will not cause this DTC to set. This diagnostic
algorithm is designed to detect an alignment condition
between a primary intermediate sprocket and the
secondary timing chain, or the alignment between a
primary intermediate sprocket and the crankshaft.
Either condition would cause the camshaft timing for
both cams on one bank to be off an equal number of
degrees.
• The presence of DTCs P0008 and P0009 along with
P0016, P0017, P0018, and P0019 indicates a
possible condition with the primary timing chain and
the alignment between both intermediate sprockets
and the crankshaft. Or, the crankshaft reluctor wheel
has moved and is no longer referenced to top dead
center (TDC).
• Observing the desired and actual camshaft angle
parameters, with a scan tool before a DTC sets, may
help to isolate whether a condition is specific to one
camshaft, one bank, or caused by a condition with the
primary crankshaft timing.
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