Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Operation
1997 Plymouth Breeze L4-2.0L VIN CSECTION Circuit Operation
CIRCUIT OPERATION
The Body Control Module (BCM) is used to supply the vehicles occupants with visual and audible information, control various vehicle functions, and provide a centralized power distribution for the passenger compartment. To both provide and receive vehicle information the BCM is interfaced to the CCD Bus.
Power for the BCM is supplied from four sources. One is the M1 circuit. This circuit is HOT at all times, and is the Ignition-Off Draw (IOD) circuit. This circuit is protected by a 10 amp fuse located in cavity 5 of the junction block.
Power is also supplied to the BCM on circuit A21. This circuit is HOT when the ignition switch is in the START/RUN position only, and connects from the ignition switch to the BCM. Power for the A21 circuit is supplied by circuit A1. Circuit A1 is connected between the PDC and the ignition switch and is protected by a 20 amp fuse located in cavity 8 of the PDC.
Circuit F11, which is HOT when the ignition switch is in the OFF/RUN/START position, supplies a constant feed to the BCM. This circuit is protected by a 10 amp fuse located in cavity 11 of the junction block. Power for the fuse is supplied on circuit A81 from the ignition switch. Circuit A81 receives its power from circuit A1 which originates in the PDC and is protected by a 20 amp fuse located in cavity 8.
Circuit F135 also supplies power to the BCM and is protected by a 15 amp fuse located in cavity 9 of the junction block. This circuit is used for the feed to the power door lock motors.
Ground for the BCM is provided by circuits Z1 and Z2. These circuits terminate at the instrument panel left side cowl.
CCD Bus interface is accomplished on circuits D1 and D2. The D1 circuit is used for Bus (+) and D2 is for Bus (-).
The Body Control Module (BCM) is used to supply the vehicles occupants with visual and audible information, control various vehicle functions, and provide a centralized power distribution for the passenger compartment. To both provide and receive vehicle information the BCM is interfaced to the CCD Bus.
Power for the BCM is supplied from four sources. One is the M1 circuit. This circuit is HOT at all times, and is the Ignition-Off Draw (IOD) circuit. This circuit is protected by a 10 amp fuse located in cavity 5 of the junction block.
Power is also supplied to the BCM on circuit A21. This circuit is HOT when the ignition switch is in the START/RUN position only, and connects from the ignition switch to the BCM. Power for the A21 circuit is supplied by circuit A1. Circuit A1 is connected between the PDC and the ignition switch and is protected by a 20 amp fuse located in cavity 8 of the PDC.
Circuit F11, which is HOT when the ignition switch is in the OFF/RUN/START position, supplies a constant feed to the BCM. This circuit is protected by a 10 amp fuse located in cavity 11 of the junction block. Power for the fuse is supplied on circuit A81 from the ignition switch. Circuit A81 receives its power from circuit A1 which originates in the PDC and is protected by a 20 amp fuse located in cavity 8.
Circuit F135 also supplies power to the BCM and is protected by a 15 amp fuse located in cavity 9 of the junction block. This circuit is used for the feed to the power door lock motors.
Ground for the BCM is provided by circuits Z1 and Z2. These circuits terminate at the instrument panel left side cowl.
CCD Bus interface is accomplished on circuits D1 and D2. The D1 circuit is used for Bus (+) and D2 is for Bus (-).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.