Suzuki XL7 2007 Service Manual page 2400

9B-79 Lighting Systems:
Park Lamps Inoperative
Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this diagnostic procedure.
• "Strategy Based Diagnosis: "
• "Diagnostic Procedure Instructions - Vehicle Diagnostic Information: "
DTC Descriptor
B2585 00: Left Park Lamp Control Circuit
B3867 00: Right Park Lamp Control Circuit
Diagnostic Fault Information
Circuit
Parklamp Control Circuit
Headlamp Switch Parklamp Signal Circuit
Headlamp Switch Parklamp Ground Circuit
Headlamp Switch
1. Parklamp Always ON
2. Parklamp Inoperative
Circuit/System Description
The body control module (BCM) controls the park lamp
relay to ground the control circuit on the park lamp relay
when the headlamp switch portion of the turn signal
multifunction switch is turned to the PARK or the HEAD
position. This energizes the park lamp relay, illuminating
the park lamps. The park lamp relay is directly soldered
to the underhood fuseblock circuit board. The
replacement of the underhood fuseblock needs to be
done to replace the park lamp relay.
Diagnostic Aids
The parklamp relay is directly soldered to the underhood
fuseblock circuit board. The replacement of the
parklamp relay means replacing the underhood
fuseblock.
A short to ground, a short to voltage or an open in the
following location may cause a malfunction to occur:
• The park lamp relay control circuit. The park lamp
relay is located within the underhood fuseblock.
• The park lamp relay
• The headlamp switch (turn signal multifunction switch)
supply circuit
• The headlamp switch (turn signal multifunction switch)
ground circuit
• The turn signal multifunction switch which includes the
headlamp switch
• The BCM.
Short to Open/High
Ground Resistance
B2585 00 B3867 B2585 00 B3867
00
1
—
1
Reference Information
Schematic Reference
"Exterior Lights Schematics"
Connector End View Reference
"Lighting Systems Connector End Views"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
• "Scan Tool Data Definitions - Lighting"
• "Scan Tool Data List - Lighting"
• "Scan Tool Output Controls - Lighting"
Circuit/System Verification
Ignition ON, turn the headlamps ON with the headlamp
switch portion of the turn signal multifunction switch.
Observe the park lamps, the park lamps should be ON.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at
the inoperative park lamp.
2. Ignition OFF, test for less than 1.0 ohm of resistance
between the ground circuit and ground.
➢ If greater than 1.0 ohm, test the ground circuit for
an open/high resistance.
Short to Voltage
B2585 00 B3867
00 00
2 —
2 2
2 2
Signal
Performance
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