Suzuki XL7 2007 Service Manual page 2663

Circuit/System Verification
1. Ignition ON, observe the scan tool Driver Door Lock
Sw or Psgr Door Lock Sw and Driver Door Unlock
Sw or Psgr Door Unlock Sw parameters while
pressing and releasing the appropriate door lock
switch and door unlock switch. The reading should
change between Active and Inactive.
➢ If the reading does not change between the
specified values, refer to Door Lock Switch
Malfunction.
2. Ignition ON, command the driver door and
passenger door latches to LOCK and UNLOCK with
the scan tool, the doors should LOCK and UNLOCK.
➢ If the door latch does not LOCK and UNOCK when
changing between commanded states, refer to
Door Lock Malfunction
Circuit/System Testing
Door Lock Switch Malfunction
1. Ignition OFF, disconnect the harness connector at
the appropriate door lock switch.
2. Ignition OFF, test for less than 1.0 ohm for resistance
between the ground circuit terminal C and ground.
➢ If greater than the specified range, test the ground
circuit for an open/high resistance.
3. Ignition ON, verify the scan tool Lock Sw parameter
is Inactive.
➢ If not the specified value, test the signal circuit
terminal L for a short to ground. If the circuit tests
normal, replace the BCM.
4. Verify the scan tool Unlock Sw parameter is Inactive.
➢ If not the specified value, test the signal circuit
terminal U for a short to ground. If the circuit tests
normal, replace the BCM.
5. Install a 3 amp fused jumper wire between the signal
circuit terminal U and ground. Verify the scan tool
Door Unlock Sw parameter is Active.
➢ If not the specified value, test the signal circuit for a
short to voltage or an open/high resistance. If the
circuit tests normal, replace the BCM.
6. Install a 3 amp fused jumper wire between the signal
circuit terminal L and ground. Verify the scan tool
Lock Sw parameter is Active.
➢ If not the specified value, test the signal circuit for a
short to voltage or an open/high resistance. If the
circuit tests normal, replace the BCM.
7. If all circuits test normal, test or replace the
appropriate door lock switch.
Door Lock Malfunction
1. Ignition OFF, disconnect the harness connector C1
at the I/P fuse block.
2. Ignition OFF, test for less than 1.0 ohm of resistance
between the ground circuit terminal 25 and ground.
➢ If greater than the specified range, test the ground
circuit for an open/high resistance.
3. Ignition OFF, disconnect the harness connector C2
at the I/P fuse block.
4. Ignition ON, verify a test lamp illuminates between
the B+ circuit terminal 3 and ground.
➢ If the test lamp does not illuminate, test the B+
circuit for a short to ground or an open/high
resistance.
5. Ignition OFF, disconnect the harness connector C3
at the I/P fuse block.
6. Connect a test lamp between the control circuit
terminal 42 and ground.
7. Ignition ON, command the lock doors ON and OFF
with a scan tool. The test lamp should turn ON and
OFF when changing between the commanded
states.
➢ If the test lamp does is always ON, test the control
circuit for a short to voltage. If the circuit tests
normal, replace the BCM.
➢ If the test lamp is always OFF, test the control
circuit for a short to ground or an open/high
resistance. If the circuit tests normal, replace the
BCM.
8. Connect a test lamp between the control circuit
terminal 8 and B+.
9. Command the driver door unlock ON and OFF with a
scan tool. The test lamp should turn ON and OFF
when changing between the commanded states.
➢ If the test lamp is always ON, test the control circuit
for a short to ground. If the circuit tests normal,
replace the BCM.
➢ If the test lamp is always OFF, test the control
circuit for a short to voltage or and open/high
resistance. If the circuit tests normal, replace the
BCM.
10. Connect a test lamp between the control circuit
terminal 41 and B+.
11. Command the unlock doors ON and OFF with a
scan tool. The test lamp should turn ON and OFF
when changing between the commanded states.
➢ If the test lamp is always ON, test the control circuit
for a short to ground. If the circuit tests normal,
replace the BCM.
➢ If the test lamp is always OFF, test the control
circuit for a short to voltage or and open/high
resistance. If the circuit tests normal, replace the
BCM.
Security and Locks: 9F-42