Suzuki XL7 2007 Service Manual page 1134

3B-5 Differential:
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
"Scan Tool Data List - Antilock Brake System: "
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector C1
at the rear differential clutch control module.
2. Ignition ON, verify a test lamp does not illuminate
between the following circuit terminals and ground:
– Signal circuit terminal 4
– Low reference circuit terminal 2
➢ If the test lamp illuminates, test the appropriate
circuit for a short to voltage.
3. Ignition OFF, test for infinite resistance between the
following circuit terminals and ground:
– Signal circuit terminal 4
– Low reference circuit terminal 2
➢ If less than the specified value, test the appropriate
circuit for a short to ground. If the circuit tests
normal, replace the CCM temp sensor.
4. Test for XX-XX ohms of resistance between the
signal circuit terminal 4 and the low reference circuit
terminal 2.
➢ If less than the specified range, test both circuits for
an open/high resistance. If the circuit tests normal,
replace the CCM temp sensor.
➢ If greater than the specified range, test both circuits
for an open/high resistance. If the circuit tests
normal, replace the CCM temp sensor.
5. If all circuits test normal, replace the CCM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
"Control Module References: " for CCM replacement,
setup, and programming
DTC C0550
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.
DTC Descriptor
DTC C0550 39: Electronic Control Unit (ECU)
Performance
Circuit/System Description
The Rear Differential Clutch Control module (CCM)
detects an internal malfunction.
Conditions for Running the DTC
The ignition switch is in the ON position.
Conditions for Setting the DTC
An internal CCM malfunction exists.
Action Taken When the DTC Sets
One or more of the following actions may occur:
• All Wheel Drive Off (AWD Disabled) DIC message.
• Service All Wheel Drive (Service AWD) DIC message.
Conditions for Clearing the DTC
• The condition for the DTC is no longer present.
• The DTC is not detected in 40 consecutive drive
cycles.
Reference Information
Schematic Reference
"All-Wheel Drive Schematics: "
Connector End View Reference
"Transfer Case Control Connector End Views: "
Description and Operation
"All-Wheel Drive Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
"Control Module References: " for Scan Tool Information
Circuit/System Verification
Verify DTC C0550 is not current.
➢ If DTC C0550 is current, replace the CCM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
"Control Module References: " for CCM replacement,
setup, and programming
DTC C0558
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.