Suzuki XL7 2007 Service Manual page 240

1A-135 Engine General Information and Diagnosis:
Circuit/System Description
The engine control module (ECM) controls the throttle
valve by applying a varying voltage to the control circuits
of the throttle actuator control (TAC) motor. The ECM
monitors the duty cycle that is required to actuate the
throttle valve. The ECM monitors the throttle position
(TP) sensors 1 and 2 to determine the actual throttle
valve position.
Conditions for Running the DTCs
P0638 and P2101
• The ignition is ON or the engine is operating.
• The ignition voltage is more than 7 volts.
• Throttle position adaptation is not active.
• DTCs P0638 and P2101 run continuously once the
above conditions are met for more than 1 second.
P2100
• Before the ECM can report DTC P2100 failed, DTC
P2101 must run and pass.
• The ignition is ON or the engine is operating.
• DTC P2100 runs continuously once the above
conditions are met for more than 1 second.
P2119
• The ignition is ON.
• The vehicle speed is 0 km/h (0 mph).
• The engine speed is less than 40 RPM.
• The engine coolant temperature (ECT) is 5-100°C
(41-212°F).
• The intake air temperature (IAT) is 5-143°C (41-
290°F).
• The ignition voltage is more than 10 volts.
• The accelerator pedal position (APP) is less than 15
percent.
• DTC P2119 runs once per ignition cycle when the
above conditions are met for less than 1 second.
Conditions for Setting the DTC
P0638
• The ECM detects that the commanded duty cycle for
the range test high is more than 80 percent for more
than 0.6 second.
OR
• The ECM detects that the commanded duty cycle for
the range test low is more than 80 percent for more
than 5 seconds.
P2100
The ECM detects the output circuit for the TAC motor is
open, shorted to ground, or shorted to a voltage.
P2101
• The ECM detects that the difference between the
commanded and the actual throttle plate position is
greater than a predetermined value. The value range
from 4-50 percent depending on the rate of the
commanded change in the throttle position.
• The condition exists for 0.5 second.
P2119
The ECM determines that the throttle valve did not return
to the rest position within 180 milliseconds.
Action Taken When the DTC Sets
DTCs P0638, P2100, P2101, and P2119 are Type A
DTCs.
Conditions for Clearing the DTC
DTCs P0638, P2100, P2101, and P2119 are Type A
DTCs.
Diagnostic Aids
Inspect for a condition in which the throttle valve may
have been held open. For example, ice may have
formed in the throttle bore causing the throttle valve not
to close.
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
"Throttle Actuator Control (TAC) 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)"
Special Tools Required
J 34730-405 Injector Test Lamp