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THEFT-DETERRENT CONTROL MODULE INSPECTION

BME091467790202

1. Remove the theft-deterrent control module without disconnecting the connectors.

2. Measure the voltage at the theft-deterrent control module terminals as indicated below.

3. Disconnect the theft-deterrent control module connector before inspecting for continuity at terminals B, N, O, P, and T.

4. If not as specified, inspect the parts listed under "Action."

  • If the parts and wiring harnesses are okay but the system still does not work properly, replace the theft-deterrent control module.

## Terminal Voltage Table (Reference)

Terminal | Signal | Connected to | Test condition | Voltage (V)/continuity | Action
--- | --- | --- | --- | --- | ---
A | - | - | - | - | -
B | Theft-deterrent control module ground | GND | Under any condition: inspect for continuity to ground | Yes | • Inspect GND
C | - | - | - | - | -
D | - | - | - | - | -
E | Theft-deterrent horn on/off | Theft-deterrent horn relay | Theft-deterrent system alarm 1: Other | B+ | • Inspect theft-deterrent horn relay • Inspection related harness
Theft-deterrent system alarm 1: Active | Alternates below 1.0 and B+
F | Key reminder switch on/off | Key reminder switch | Key reminder switch on | B+ | • Inspect key reminder switch • Inspect related harness
Key reminder switch off | Below 1.0
G | - | - | - | - | -
H | - | - | - | - | -
I | - | - | - | - | -
J | - | - | - | - | -
K | - | - | - | - | -
L | - | - | - | - | -
M | - | - | - | - | -
N | Lock/unlock | Driver's door lock-link switch | Driver's door lock-link switch locked: inspect for continuity to ground | No | • Inspect driver's door lock-link switch • Inspect related harness
Driver's door lock-link switch unlocked: inspect for continuity to ground | Yes
O | Lock/unlock | • Passenger's door lock-link switch • Sliding door lock-link switch | Sliding door closed | Passenger's and sliding door lock-link switch locked: inspect for continuity to ground | No | • Inspect passenger's or sliding door lock-link switch • Inspect related harness
Passenger's and sliding door lock-link switch unlocked: inspect for continuity to ground | Yes
P | Bonnet open/closed | Bonnet switch | Bonnet switch on: inspect for continuity to ground | Yes | • Inspect bonnet switch • Inspect related harness
Bonnet switch off: inspect for continuity to ground | No
Q | Door key cylinder switch | • Driver's door key cylinder switch • Passenger's door key cylinder switch • Liftgate key cylinder switch | Driver's or passenger's door or liftgate locked with key or transmitter | 2.5 | • Inspect driver's or passenger's door key cylinder switch • Inspect liftgate key cylinder switch • Inspect related harness
Driver's or passenger's door or liftgate unlocked with key or transmitter | Below 1.0
Other | 5
R | - | - | - | - | -
S | Security light on/off | Security light | Security light on | Below 1.0 | • Inspect security light • Inspect related harness
Security light off | B+
T | Door open/closed | • Door switch • Cargo compartment light switch | Any door or liftgate open: inspect for continuity to ground | Yes | • Inspect door switch • Inspect cargo compartment light switch • Inspect related harness
All doors and liftgate closed: inspect for continuity to ground | No
U | Hazard warning signal output | Flasher unit | Theft-deterrent system alarm 1: Active | Below 1.0 | • Inspect flasher unit (See FLASHER UNIT INSPECTION) • Inspect related harness
Theft-deterrent system alarm 1: Other | B+
V | Keyless entry system discernment signal input | Keyless unit | Under any condition | 5 | • Inspect keyless unit • Inspection related harness
W | IG1 | ENGINE 10 A fuse | Ignition switch at ON position | B+ | • Inspect ignition switch • Inspect ENGINE 10 A fuse • Inspect related harness
Ignition switch at LOCK or ACC position | Below 1.0
X | Power supply | ROOM 15 A fuse | Under any condition | B+ | • Inspect ROOM 15 A fuse