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
Cruise Control System
CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| U000100 | High Speed CAN Communication Bus |
| U0100/5C-61 | Lost Communication with ECM / PCM "A" |
| U010000 | Lost Communication With ECM/PCM "A" |
| U012100 | Lost Communication With Anti-Lock Brake System (ABS) Control Module |
| U013100 | Lost Communication With Power Steering Control Module |
| U015500 | Lost Communication With Instrument Panel Cluster (IPC) Control Module |
| U040100 | Invalid Data Received from ECM/PCM A |
| U040182 | Invalid Data Received from ECM/PCM A alive / sequence counter incorrect / not updated |
| U041500 | Invalid Data Received From Anti-Lock Brake System (ABS) Control Module |
| U041568 | Invalid Data Received From Anti-Lock Brake System (ABS) Control Module event information |
| U041582 | Invalid Data Received From Anti-Lock Brake System (ABS) Control Module alive / sequence counter incorrect / not update |
| U042000 | Invalid Data Received From Power Steering Control Module |
| U042082 | Invalid Data Received From Power Steering Control Module alive / sequence counter incorrect / not updated |
| U042300 | Invalid Data Received From Power Steering Control Module |
| U042382 | Invalid Data Received from Instrument Panel Cluster Control Module alive / sequence counter incorrect / not updated |
| U1A1449 | CAN Initialisation Failure internal electronic failure |
| U230054 | Central Configuration missing calibration |
| U230055 | Central Configuration not configured |
| U230056 | Central Configuration invalid / incompatible configuration |
| U230064 | Central Configuration signal plausibility failure |
| U300000 | Control Module |
| U300064 | Control Module signal plausibility failure |
| U300316 | Battery Voltage circuit voltage below threshold |
| U300317 | Battery Voltage circuit voltage above 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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