Problem Symptoms Table
The power tilt & power telescopic steering column system uses the multiplex communication system, so check its diagnostic system before proceeding to troubleshooting. The table below will be useful in troubleshooting these electrical systems. The numbered suspected areas indicate the likelihood of the cause in descending order. Inspect each part in the order shown, and replace if a fault is found.
- If the instruction "PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE" is given in the flow chart on the following articles, proceed to the circuit with the next highest number in the table below to continue the check.
- If the problem still occurs when there is no abnormality in the related circuits, check the multiplex tilt & telescopic ECU and replace it if necessary.
POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM:
SYMPTOM CHARTSymptom Suspected Area See Only manual switch does not operate 1. Tilt & telescopic manual switch circuit TILT AND TELESCOPIC MANUAL SWITCH CIRCUIT 2. Windshield wiper switch assembly (Combination switch ECU) INSTALLATION 3. Multiplex tilt & telescopic ECU STEERING COLUMN ASSEMBLY (FOR POWER TILT AND POWER TELESCOPIC) Only auto away/return function does not operate 1. Check customize status of auto away function using the Techstream CUSTOMIZE PARAMETERS 2. IG power source circuit IG POWER SOURCE CIRCUIT 3. Multiplex tilt & telescopic ECU STEERING COLUMN ASSEMBLY (FOR POWER TILT AND POWER TELESCOPIC) Only auto away function does not operate 1. Push button start function (for 2GR-FSE) ON-VEHICLE INSPECTION 2. Push button start function (for 4GR-FSE) ON-VEHICLE INSPECTION 3. Multiplex tilt & telescopic ECU STEERING COLUMN ASSEMBLY (FOR POWER TILT AND POWER TELESCOPIC) Only auto return function does not operate 1. Push button start function (for 2GR-FSE) ON-VEHICLE INSPECTION 2. Push button start function (for 4GR-FSE) ON-VEHICLE INSPECTION 3. Multiplex tilt & telescopic ECU STEERING COLUMN ASSEMBLY (FOR POWER TILT AND POWER TELESCOPIC) Only memory function does not operate 1. Driving position memory switch INSPECTION 2. Multiplex tilt & telescopic ECU STEERING COLUMN ASSEMBLY (FOR POWER TILT AND POWER TELESCOPIC)