Reference Information - Suzuki XL7 2007 Service Manual

1A-69 Engine General Information and Diagnosis:

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
"Air Intake 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. Engine idling for 1 minute, observe the DTC
information with a scan tool. DTC P0101 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.
Circuit/System Testing
1. Inspect for the following conditions:
– An engine vacuum leak
– An air leak in the intake air duct between the mass
air flow (MAF) sensor and the throttle body
– A plugged or collapsed intake air duct
– Objects that block the MAF sensor air inlet
– An air filter element that is restricted
– The hydro-carbon absorber in the air cleaner
assembly for ruptures or deterioration.
– A restricted throttle plate or for carbon build-up
around the throttle plate
– An unseated engine oil dip stick
– A loose or missing engine oil fill cap
– An over filled crankcase
➢ If you find any of the above conditions, repair as
necessary.
2. Ignition OFF, disconnect the harness connector at
the MAF sensor.
CAUTION
!
Do NOT use the low reference circuit in the
component harness connector for this test.
Damage to the control module may occur due
to excessive current draw.
3. Ignition ON, load test the ignition circuit for B+
between terminal B and ground.
➢ If less than the specified value, repair the ignition
circuit for an open/high resistance.
4. Test for less than 5 ohms between the ground circuit
terminal C and the battery ground.
➢ If greater than the specified value, repair the
ground circuit for an open/high resistance.
5. Test for less than 5.10 volts between the signal
circuit terminal A and ground circuit terminal C.
➢ If greater than the specified value, test the signal
circuit for a short to voltage. If the circuit/
connections test normal, replace the ECM.
6. Test for greater than 3.98 mA between the signal
circuit terminal A and the ground circuit terminal C.
➢ If less than the specified value, test the signal
circuit for an open/high resistance or for a short to
ground. If the circuit/connections test normal,
replace the ECM.
7. If all circuits/connections test normal, replace the
MAF sensor.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
• "Mass Airflow Sensor/Intake Air Temperature Sensor
Replacement: "
• "Control Module References: " for engine control
module replacement, setup, and programming