Rear Hatch/Gate Ajar Indicator Always - Suzuki XL7 2007 Service Manual

Rear Hatch/Gate Ajar Indicator Always On
Diagnostic Fault Information
NOTE
Always perform the "Diagnostic System Check - Vehicle Diagnostic Information: " prior to using this
diagnostic procedure.
Circuit
Liftgate Ajar Signal Circuit
Liftgate Ajar Ground Circuit
Body Control Module
Instrument Panel Cluster
1. Liftgate Ajar Light Stays On
2. Liftgate Ajar Light Will not Come On
Circuit/System Description
With the rear hatch/gate door closed the rear hatch door
ajar light is off. When the rear hatch is opened or a door
is not closed tightly the rear door ajar light will turn on in
the instrument panel cluster (IPC)
Diagnostic Aids
The door ajar switches supply a ground to the body
control module (BCM) when the door is open. Once the
door is closed the door ajar switch opens canceling the
ground to the BCM. The BCM sends a signal to the IPC
to turn on the door ajar light when a door is open.
Reference Information
Schematic Reference
"Door Lock/Indicator Schematics: "
Connector End View Reference
"Vehicle Access Connector End Views: "
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Circuit/System Verification
Ignition ON, observe the scan tool rear door ajar switch
parameter while opening and closing the rear hatch. The
reading should change between low and high.
Circuit/System Testing
Rear Hatch Ajar Switch Circuit Testing
1. Ignition OFF, disconnect the harness connector at
the rear hatch ajar switch.
2. 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.
3. Verify the scan tool liftgate ajar switch parameter is
low.
Instrumentation / Driver Info. / Horn:
Short to Open/High
Ground Resistance
1 2
— 2
2 2
1, 2 2
➢ If not low, test the signal circuit for a short to
ground. If the circuit tests normal, replace the BCM.
➢ If the rear hatch indicator is still ON, test the IPC
rear hatch indicator signal circuit for a short to
voltage. If the circuit tests normal, replace the IPC
4. Install a 3-amp fused jumper wire between the signal
circuit and ground. Verify the scan tool door ajar
parameter is high.
➢ If not high, test the signal circuit of the door ajar
switch for a short to voltage or an open/high
resistance. If circuit tests normal, replace the BCM.
5. If all circuits test normal, test or replace the liftgate
ajar switch.
Component Testing
Door Ajar Switch Testing
1. Ignition OFF, disconnect the harness connector at
the rear hatch ajar switch.
2. Test for infinite resistance between the signal
terminal and the voltage supply terminal with the
switch in the open position.
➢ If less than infinite resistance, replace the door ajar
switch.
3. Test for less than 1.0 ohms between the signal
terminal and the voltage supply terminal with the
switch in the closed position.
➢ If greater than 1.0 ohms, replace the rear hatch ajar
switch.
Repair Instructions
NOTE
Always perform the "Diagnostic Repair
Verification - Vehicle Diagnostic Information:
" after completing the diagnostic procedure.
• "Rear Side Door Latch Replacement: "
• "Control Module References: " for IPC and BCM
replacement, setup, and programming
Signal
Short to Voltage
Performance
—
2
1
1, 2
9C-48
—
—
—
—