Suzuki XL7 2007 Service Manual page 822

1G-22 Fuel System:
Total Fuel Trim Avg. Bank 1 or Bank 2: This
parameter displays the overall fuel trim from the idle/
decel cell and the cruise/accel cell.
Total Knock Retard: This parameter indicates how
much ignition spark timing is being retarded due to
all control systems monitored by the control module.
The scan tool will display a high value during
extreme conditions such as high temperatures and
antilock braking. The scan tool will display a lower
value during lighter driving conditions.
Total Misfire Count: This parameter displays the total
number of cylinder firing events that the control
module detected as misfires for the last 200
crankshaft revolution sample period.
TP Desired Angle: This parameter displays the desired
TP angle commanded by the control module.
TP Indicated Angle: This parameter displays the
percent of throttle opening as calculated by the
control module using information from the two TP
sensors.
TP Performance Test: This parameter displays the
status of the throttle position (TP) performance test
by the control module. The scan tool will display OK
if no fault is found. The scan tool will display Fault if
the control module detects a fault during the test.
TP Sensor 1: This parameter displays the actual
voltage on the TP sensor 1 signal circuit as
measured by the control module.
TP Sensor 1 Learned Minimum: This parameter
displays the learned minimum value of throttle
position (TP) sensor 1 as recorded by the control
module during the last learn procedure.
TP Sensor 2: This parameter displays the actual
voltage on the TP sensor 2 signal circuit as
measured by the control module.
TP Sensor 2 Learned Minimum: This parameter
displays the learned minimum value of TP sensor 2
as recorded by the control module during the last
learn procedure.
TP Sensor 1 and 2: This parameter displays Disagree
when the control module detects that TP sensor 1
voltage signal is not within the correct relationship to
TP sensor 2. The scan tool displays Agree under the
normal operating conditions.
Traction Control Status: This parameter displays
Active if the electronic brake and traction control
module (EBTCM) is commanding traction control.
Vehicle Security Status: This parameter displays the
status of the vehicle theft deterrent system.
TWC Temperature Calculated: This parameter
displays the catalytic converter temperature as
calculated by the control module.
Vehicle Speed Sensor: This parameter displays the
speed of the vehicle as calculated by the
transmission control module (TCM) from information
received from the vehicle speed sensor (VSS).
Volumetric Efficiency: This parameter displays the
calculated volumetric efficiency of the engine as
calculated by the control module.
VTD Auto. Learn Timer: This parameter indicates that
either the auto learn timer (used in the auto learn
procedure to enable VTD password learning) or the
seed and key timer (used in the seed and key
procedure to enable VTD password learning) is
active.
VTD Fuel Disable: This parameter indicates the VTD
system has disabled fuel.
VTD Fuel Enabled: This parameter indicates the VTD
system has enabled fuel.
VTD Fuel Disable Until Ign. Off: This parameter
indicates the VTD system has disabled fuel for the
remainder of the ignition cycle.
VTD Password learned: This indicates learning of the
VTD password received from the platform
electronics is enabled. VTD password learning is first
enabled in assembly plant (prior to the
manufacturer's enable counter being set to zero)
may be re-enabled using 1 of 2 procedures.
Warm Ups Since DTC Cleared: This parameter
indicates the number of warm up cycles that have
occurred Since DTCs were cleared. The scan tool
will display a higher counts as more warm up cycles
have occurred since the DTCs were cleared.
Wide Open Throttle: This parameter indicates the
throttle status commanded by the control module.
The scan tool will display YES is the vehicle throttle
is commanded to wide open. The scan tool will
display NO if the vehicle throttle is commanded to an
amount less than 100%.
Fuel Pump Electrical Circuit Diagnosis
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.
Circuit/System Description
The engine control module (ECM) provides a voltage to
the coil side of the fuel pump relay. When the ignition
switch is first turned ON, the ECM turns ON the fuel
pump relay, which applies power to the fuel pump. The
ECM enables the fuel pump relay as long as the engine
is cranking or running, and crankshaft reference pulses
are received. If no crankshaft reference pulses are
received, the ECM turns OFF the fuel pump relay after
about 3 seconds.