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 1620, 1621, 155R
1993 Saturn SC L4-1.9L DOHC VIN 7SECTION Circuit 1620, 1621, 155R
CIRCUIT 1620, 1621, 155R, AND DRIVER SIDE A AND B POSITION SENSOR SWITCHES
Function:
The position sensor switch circuits will OPEN when the mouse is at the switch.
CIRCUIT 1621
Location:
Connects passive restraint control module connector cavity D to B position switch connector cavity E.
Type:
Dark Blue 22 gage wire
Repair:
Check for OPENS/SHORTS.
CIRCUIT 1620
Location:
Connects passive restraint control module connector cavity C to A Position Switch connector cavity D.
Type:
Brown 22 gage wire
Repair:
Check for OPENS/SHORTS.
A POSITION SWITCH SENSOR
Function:
Switch should be OPEN with mouse at switch.
B POSITION SWITCH SENSOR
Function:
Switch should be OPEN with mouse at switch.
CIRCUIT 155R
Location:
Connects position switch connector cavity A to left body ground splice pack cavity H.
Type:
Black 22 gage wire
Repair:
Check for OPENS.
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.