Dtc P0520 - Suzuki XL7 2007 Service Manual

9C-35 Instrumentation / Driver Info. / Horn:
Diagnostic Aids
Using the Failure Records data may help locate an
intermittent condition. If you cannot duplicate the DTC,
the information in the Failure Records can help
determine how many miles since the DTC set. The Fail
Counter and Pass Counter can help determine how
many ignition cycles that the diagnostic test reported a
pass and/or a fail.
Reference Information
Schematic Reference
• "Instrument Cluster Schematics"
• "Engine Controls Schematics: " for the 3.6L engine
Connector End View Reference
• "Displays and Gages Connector End Views"
• "Engine Control Module Connector End Views: " for
the 3.6L engine
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
"Scan Tool Data List - Displays and Gages"

DTC P0520

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: ".
DTC Descriptor
DTC P0520: Engine Oil Pressure (EOP) Switch Circuit
Diagnostic Fault Information
Circuit
Oil Pressure Switch Signal
Low Reference
1. Engine Oil Pressure Indicator Always On
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at
the fuel level sensors. Install a signal generator and
instrument panel tester between the signal circuit
and the low reference circuit.
2. Ignition ON, vary the resistance on the signal
generator from 40 to 250 ohms. Verify that the scan
tool Fuel Tank Level Remaining parameter displays
the correct fuel level percent.
➢ If the fuel level percent is incorrect, test the signal
circuit and the low reference circuit for an open/high
resistance. If the circuits test normal, replace the
ECM.
3. If all circuits test normal, test or replace the fuel level
sensors.
Component Testing
Measure the resistance of the float arm of the fuel level
sender while moving the float arm between 40-250
ohms.
➢ If the resistance does not move smoothly across
the specified range, replace the fuel level sensor.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
• "Primary Fuel Tank Module Replacement: "
• "Secondary Fuel Tank Module Replacement: "
• "Control Module References: " for ECM replacement,
setup, and programming.
Short to Open/High
Ground Resistance
1 P0520
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Signal
Short to Voltage
Performance
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