SMOKINV8

iTrader: (6)

Short background on the situation:

My O2 sensors started going crazy out of the blue and my factory alarm somehow re-enabled itself*, so I'm pretty sure I've got a bad ground somewhere. I'd like to know the location of the factory alarm so I can start tracing down the circuit to find my issue. I know the shock sensor is on the passenger side fender well in the hatch, but I need to know where the brain itself is.

Thanks in advance.

* The alarm goes off if I lock the doors by the remote, and if I lock the doors by the electric lock button it goes off when I shut the door.

MikeFbody

iTrader: (2)

there is no separate alarm brain, it's part of the BCM. BCM is on the passenger side dash, behind the glove box, under the airbag, all the way to the right.

SMOKINV8

iTrader: (6)

Thanks Mike, that helped me get to the next step in my miniature mess.

Next question, which wire from the BCM goes to the Gauge fuse in the fuse panel? The owners manual shows that the "Gauges" fuse has the BCM on it, but the other BCM features seem to function just fine. So is it safe to assume the power for that fuse's power comes FROM the BCM? I've got the pin-out for the BCM, but I don't see anything that looks like it goes there.

Main (Blue) Connector:
C1
BLK
650
Ground

C2
PPL/WHT
1074
Ignition key resistor return

C3
--
--
Not used

C4
PPL/WHT
237
Fasten seat belt indicator control

C5
DK GRN
220
Starter enable (V6 VIN K)

C6
DK GRN/WHT
817
Vehicle speed input (Gulf States)

C7
GRY
157
Interior lamps command input

C8
BLU/WHT
624
Park lamps relay control (Domestic)

C8
YEL
1977
Rear fog lamp relay control (Europe)

C9
BLK
BLK
Horn relay control

C10
--
--
Not used

C11
YEL/BLK
625
Starter relay control

C12
GRY
728
Security indicator lamp control

C13
BLK/WHT
238
Seat belt switch signal

C14
LT GRN
80
Ignition key signal

C15
YEL/BLK
68
Low coolant indicator latching

C16
--
--
Not used

D1
WHT
156
Courtesy lamps return

D2
LT BLU
263
Shock sensor tamper input

D3
BLK/WHT
1576
Rear compartment lid release signal

D4
BRN
253
Rear compartment lid release relay control

D5
PNK
39
Ignition positive voltage

D6
YEL
49
Program input

D7
WHT/BLK
1037
Ignition key resistor feed

D8
DK BLU
229
Fuel enable

D9
LT BLU
187
Rear fog lamp request (Europe)

D10
--
--
Not used

D11
GRY/BLK
745
Driver door open input

D12
BLK/WHT
746
Passenger door input

D13
ORN/BLK
737
Rear compartment lid ajar input

D14
LT GRN
1828
Shock sensor shock input (Domestic)

D14
BLK
650
Ground (Europe)

D15
BRN
9
Park lamps feed

D16
--
--
Not used