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.
2006 Lincoln ZephyrFACTORY OEM SERVICE PROCEDURE
Wiper/Washer Systems
SMART JUNCTION BOX (SJB) WIPER SELF-TEST DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTC | Description | Source | Action |
|---|---|---|---|
| B1432 | Wiper Brake/Run Relay Circuit Short to Battery | SJB | GO to PINPOINT TEST A . |
| B1433 | Wiper Brake/Run Relay Circuit Short to Ground | SJB | GO to PINPOINT TEST B . |
| B1447 | Wiper Park Sense Circuit Open | SJB | GO to PINPOINT TEST F . |
| B2179 | Front Wiper Select Switch "A" Short to Ground | SJB | GO to PINPOINT TEST B . |
| B2180 | Front Wiper Select Switch "B" Short to Ground | SJB | GO to PINPOINT TEST B . |
| B2181 | Front Wiper Select Switch "C" Short to Ground | SJB | GO to PINPOINT TEST B . |
| B2183 | Front Wiper Select Switch "H" Short to Ground | SJB | GO to PINPOINT TEST C . |
| B2184 | Front Wiper Select Switch "W" Short to Ground | SJB | GO to PINPOINT TEST E . |
| U1900 | CAN communication bus fault - receive error | SJB |
NOTE:
Do not install a new SJB as part of a repair for a SJB DTC U1900 fault. The SJB is not the source of the fault when DTC U1900 is present. REFER to
MODULE COMMUNICATIONS NETWORK
to diagnose the MS-CAN network concern.
|
Factory Service Tools
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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.
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