Suzuki XL7 2007 Service Manual page 163

Circuit/System Description
The camshaft position (CMP) actuator system enables
the engine control module (ECM) to change the timing of
the camshafts while the engine is operating. The CMP
actuator solenoid signal from the ECM is pulse width
modulated (PWM). The ECM controls the CMP actuator
solenoid duty cycle by controlling the amount of solenoid
ON time. The CMP actuator solenoid controls the
advance or the retard of each camshaft. The CMP
actuator solenoid controls the oil flow that applies the
pressure to advance or retard the camshafts.
Ignition voltage is supplied directly to the CMP actuator
solenoid. The ECM controls the solenoid by grounding
the control circuit with a solid state device called a driver.
The driver is equipped with a feedback circuit that is
pulled-up to a voltage. The ECM can determine if the
control circuit is open, shorted to ground, or shorted to a
voltage by monitoring the feedback voltage.
Conditions for Running the DTC
• The engine speed is more than 80 RPM.
• The ignition voltage is between 10-18 volts.
• The ECM has commanded the CMP actuator solenoid
ON and OFF at least once during the ignition cycle.
• DTCs P0010, P0013, P0020, P0023, P2088, P2089,
P2090, P2091, P2092, P2093, P2094, and P2095 run
continuously once the above conditions are met for
more than 1 second.
Conditions for Setting the DTC
P0010, P0013, P0020, P0023
The ECM detects an open in the CMP actuator solenoid
circuits for more than 4 seconds or a cumulative of 50
seconds, when the solenoid is commanded OFF.
P2088, P2090, P2092, P2094
The ECM detects a short to ground in the CMP actuator
solenoid circuits for more than 4 seconds or a
cumulative of 50 seconds, when the solenoid is
commanded OFF.
P2089, P2091, P2093, P2095
The ECM detects a short to voltage in the CMP actuator
solenoid circuits for more than 4 seconds or a
cumulative of 50 seconds, when the solenoid is
commanded ON.
Action Taken When the DTC Sets
DTCs P0010, P0013, P0020, P0023, P2088, P2089,
P2090, P2091, P2092, P2093, P2094, and P2095 are
type B DTCs.
Engine General Information and Diagnosis:
Conditions for Clearing the DTC
DTCs P0010, P0013, P0020, P0023, P2088, P2089,
P2090, P2091, P2092, P2093, P2094, and P2095 are
type B DTCs.
Diagnostic Aids
If the condition is intermittent, move the related
harnesses and connectors, with the engine operating,
while monitoring the circuit status for the component with
a scan tool. The circuit status parameter changes from
OK or Indeterminate to Fault if there is a condition with
the circuit or a connection.
Reference Information
Schematic Reference
"Engine Controls Schematics"
Connector End View Reference
• "Engine Control Module Connector End Views"
• "Engine Controls Connector End Views"
Description and Operation
"Camshaft Actuator System Description: "
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
DTC Type Reference
"Powertrain Diagnostic Trouble Code (DTC) Type
Definitions"
Scan Tool Reference
• "Scan Tool Data List - Engine Controls - 3.6L (LY7)"
• "Scan Tool Data Definitions - Engine Controls - 3.6L
(LY7)"
• "Scan Tool Output Controls - Engine Controls - 3.6L
(LY7)"
Circuit/System Verification
1. With the engine at normal operating temperature,
raise the engine speed to 2,000 RPM for 10
seconds. DTCs P0010, P0013, P0020, P0023,
P2088, P2089, P2090, P2091, P2092, P2093,
P2094, or P2095 should not set.
2. If the vehicle passes the Circuit/System Verification
test, then operate the vehicle within the conditions
for running the DTC. You may also operate the
vehicle within the conditions that are captured in the
Freeze Frame/Failure Records Data List.
1A-58