Suzuki XL7 2007 Service Manual page 212

1A-107 Engine General Information and Diagnosis:
DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, or
P0393
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 P0341: Intake Camshaft Position (CMP) Sensor Performance Bank 1
DTC P0342: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1
DTC P0343: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1
DTC P0346: Intake Camshaft Position (CMP) Sensor Performance Bank 2
DTC P0347: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2
DTC P0348: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2
DTC P0366: Exhaust Camshaft Position (CMP) Sensor Performance Bank 1
DTC P0367: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1
DTC P0368: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1
DTC P0391: Exhaust Camshaft Position (CMP) Sensor Performance Bank 2
DTC P0392: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2
DTC P0393: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2
Diagnostic Fault Information
Circuit
CMP Sensor 5-Volt Reference
CMP Sensor Signal Intake Bank 1
CMP Sensor Signal Intake Bank 2
CMP Sensor Signal Exhaust Bank 1
CMP Sensor Signal Exhaust Bank 2
Low Reference
Circuit/System Description
Each camshaft is equipped with a camshaft position
(CMP) sensor that the engine control module (ECM)
monitors. The CMP sensor is a hall effect switch that
works in conjunction with a 4X reluctor wheel. The
reluctor wheels are mounted to the camshaft position
actuators that are mounted to the end of the camshafts.
The ECM uses the CMP sensor signals in order to
determine the position of the camshafts. The ECM
supplies 5 volts to the CMP sensors on the 5-volt
reference circuits, and supplies a ground on the low
reference circuits. The CMP sensors provide a signal to
the ECM on the signal circuits. If the ECM detects extra
or missing CMP sensor signal transitions, or a signal
voltage that is more or less than the predetermined
range, within a certain number of crankshaft revolutions,
one of these DTCs sets.
Short to Open/High
Ground Resistance
P0343, P0348,
P0368, P0393, P0343, P0348,
P0652, P2122, P0368, P0393
P2138
P0342 P0343
P0347 P0348
P0367 P0368
P0392 P0393
P0343, P0348,
—
P0368, P0393
Conditions for Running the DTC
• The engine is operating for more than 1 second.
• The DTCs run continuously once the above condition
is met.
Conditions for Setting the DTC
P0341, P0346, P0366, P0391
• The ECM detects a signal from the CMP sensor, but
the number of pulses are less than or more than what
is expected for one crankshaft revolution.
OR
• The CMP sensor does NOT correlate to the
crankshaft position.
• Either condition must exist for more than 4 seconds,
or cumulative of 50 seconds.
P0342, P0347, P0367, P0392
The CMP sensor signal voltage is always low and the
ECM detects no pulses from the CMP sensor for more
than 4 seconds, or cumulative of 50 seconds.
Signal
Short to Voltage
Performance
P0341, P0346,
P0653, P2123, P0366, P0391,
P2138 P0652, P0653,
P2138
P0343 P0341
P0348 P0346
P0368 P0366
P0393 P0391
P0341, P0346,
—
P0366, P0391