Test 19J - Diagnosing Door Lock Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article in this section.

CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.

Using DRB, read door locks status. If DRB does not display AUTO DOOR LOCKS ARE ENABLED, use DRB to enable door locks and retest system. If DRB displays AUTO DOOR LOCKS ARE ENABLED, go to next step.
Using DRB, actuate door locks. If doors do not lock, go to TEST 19A . If doors lock, ensure left front door is closed. Using DRB, read door ajar switch status. If DRB does not display LF DOOR AJAR:OPEN, go to TEST 40A . If DRB displays LF DOOR AJAR:OPEN, go to next step.
Ensure right front door is closed. Read door ajar switch status. If DRB does not display RF DOOR AJAR:OPEN, go to TEST 41A . If DRB displays RF DOOR AJAR:OPEN, go to next step.
Ensure side door is closed. Read door ajar switch status. If DRB does not display SIDE DR AJR:OPEN, go to TEST 42A . If DRB displays SIDE DR AJR:OPEN, go to next step.
Ensure liftgate is closed. Read door ajar switch status. If DRB does not display GATE AJAR:OPEN, go to TEST 43A . If DRB displays GATE AJAR:OPEN, go to next step.
Read Body Control Module (BCM) monitors. If TPS percentage does not increase as throttle is opened, see appropriate TESTS W/CODES article in this section to diagnose TPS trouble codes. If TPS percentage increases as throttle is opened, go to next step.
Raise and support vehicle. Start engine and shift vehicle into Drive (1st gear on manual transmission). Using DRB, read BCM monitors. If MPH does not increase as throttle is opened, see appropriate TESTS W/CODES article in this section to diagnose VSS faults. If MPH increases as throttle is opened, turn ignition off and circuit is operating properly. Retest system.