Prius L4-1.8L (2ZR-FXE) Hybrid (2010)
Steering Angle Sensor: Initial Inspection and Diagnostic Overview
How To Proceed With Troubleshooting
BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: HOW TO PROCEED
WITH TROUBLESHOOTING
HINT
*: Use the Techstream.
1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CUSTOMER PROBLEM ANALYSIS
(a) Interview the customer and confirm the problem See: Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How
To Proceed With Troubleshooting.
NEXT -- Continue to next step.
3. CHECK DTC AND FREEZE FRAME DATA*
(a) Check and record DTCs and Freeze Frame Data.
(b) Clear the DTCs and Freeze Frame Data See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes for DTC
Check/Clear, and See: Testing and Inspection/Scan Tool Testing and Procedures/Freeze Frame Data for Freeze Frame Data).
(c) Reconfirm the DTCs.
(1) Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data See: Testing and Inspection/Reading and Clearing
Diagnostic Trouble Codes for DTC Check/Clear, and See: Testing and Inspection/Scan Tool Testing and Procedures/Freeze Frame
Data for Freeze Frame Data).
HINT
*
When DTCs indicating CAN communication system malfunctions are output, repair the CAN communication system before
repairing each corresponding sensor See: Powertrain Management/Computers and Control Systems/Information Bus/Testing
and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With Troubleshooting.
*
If any of DTCs U0123/62, U0124/95, U0126/63, and U0293/59 is output together with a CAN communication DTC, first check the
appropriate sensor for a momentary open circuit See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Check
For Intermittent Problems.
*
If the Techstream cannot communicate with the skid control ECU, inspect the CAN communication system See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic
Overview/CAN Communication System/How to Proceed With Troubleshooting.
*
If there is no response from the skid control ECU, inspect the IG1 circuit of the skid control ECU See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated
Procedures/C Code Charts/C1241.
Result:
B -- Go to step 5
C -- Go to step 6
A -- Continue to next step.
4. DIAGNOSTIC TROUBLE CODE CHART
(a) Proceed to Diagnostic Trouble Code Chart See: Powertrain Management/Computers and Control Systems/Testing and