Problem Symptoms Table
The power tilt and 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 pages, 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 and telescopic ECU and replace it if necessary.
POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM:
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Only manual switch does not operate | 1. Tilt and telescopic manual switch circuit | TILT AND TELESCOPIC MANUAL SWITCH CIRCUIT |
| 2. Headlight dimmer switch assembly (Tilt and Telescopic manual switch) | TILT AND TELESCOPIC MANUAL SWITCH CIRCUIT | |
| 3. Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only auto away/return function does not operate | 1. Check customization status of auto away function using intelligent tester | CUSTOMIZE PARAMETERS |
| 2. IG power source circuit | IG POWER SOURCE CIRCUIT | |
| 3. Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only auto away function does not operate | 1. Smart access system with push button start function | PROBLEM SYMPTOMS TABLE |
| 2. Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only auto return function does not operate | 1. Smart access system with push button start function | PROBLEM SYMPTOMS TABLE |
| 2. Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only memory function does not operate | 1. Driving position memory switch | INSPECTION |
| 2. Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU |