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.
2016 Scion iA Automatic TransFACTORY OEM SERVICE PROCEDURE
Lin Communication System
LIN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B109811 | Left Position Light circuit short to ground |
| B109911 | Right Position Light circuit short to ground |
| B111E12 | Boot/Trunk Lamps circuit short to battery |
| B114213 | Ignition Status 1 circuit open |
| B120709 | Crash Input Hardwired Signal Component Failures |
| B120786 | Crash Input Hardwired Signal signal invalid |
| B124A11 | Right Daytime Running Light circuit short to ground |
| B127711 | Reverse Lamp circuit short to ground |
| B131312 | Interior Lighting Output circuit short to battery |
| B143A00 | Crash Event Detection Output |
| B1C7913 | Front Washer Pump circuit open |
| B1D0011 | Left Low Beam circuit short to ground |
| B1D0013 | Left Low Beam circuit open |
| B1D0111 | Right Low Beam circuit short to ground |
| B1D0113 | Right Low Beam circuit open |
| B1D0211 | Left High Beam Circuit circuit short to ground |
| B1D0213 | Left High Beam Circuit circuit open |
| B1D0311 | Right High Beam Circuit circuit short to ground |
| B1D0313 | Right High Beam Circuit circuit open |
| P060449 | Internal Control Module Random Access Memory (RAM) Error internal electronic failure |
| P060549 | Internal Control Module Read Only Memory (ROM) Error internal electronic failure |
| U014000 | Lost Communication With Body Control Module |
| U032209 | Software Incompatibility with Body Control Module Component Failures |
| U032282 | Software Incompatibility with Body Control Module alive / sequence counter incorrect / not updated |
| U042286 | Invalid Data Received From Body Control Module signal invalid |
| U201011 | Switch Illumination circuit short to ground |
| U300009 | Control Module Component Failures |
| U300044 | Control Module data memory failure |
| U300047 | Control Module watchdog / safety microC failure |
| U300049 | Control Module internal electronic failure |
| U300316 | Battery Voltage circuit voltage below threshold |
| U300317 | Battery Voltage circuit voltage above threshold |
| U300616 | Control Module Input Power "A" circuit voltage below threshold |
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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