DTC Lincoln P1786 Short Explanation
Channel: Maxidot Lincoln
Date: 18/07/2020

The video focuses on the basic Lincoln specific diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
Lincoln
Code:
P1786
Definition:
Driver Frontal Squib 1 Control Circuit Open
Description:
When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a “floating” configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. Use of the SRS Load Tool in the tests below substitutes a suspect squib with a known good component. The use of the Adapter, Supplemental Restraint System Load Tool provides a test point as well as a method for opening the shorting bar connections within the harness connector.
Cause:
(R43) DRIVER SQUIB 1 LINE 2 CIRCUIT OPEN(R45) DRIVER SQUIB 1 LINE 1 CIRCUIT OPENSTEERING CONTROL MODULEDRIVER AIRBAGOCCUPANT RESTRAINT CONTROLLER (ORC)