Section 342 (Body Control System - Diagnosis)
WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Diagnostic Trouble Code Chart
- Parts Location
- Terminals Of Ecu
- Problem Symptoms Table
- Circuit Inspection
- DTC B1244: Light Sensor Circuit Malfunction
- Power source circuit (Body ECU Main)
- Ignition switch power source circuit (Body ECU Main)
- Key unlock warning switch circuit
- Door courtesy switch circuit
- Light control switch circuit
- Headlight dimmer switch circuit
- Parking brake switch circuit
- Driver seat buckle switch circuit
- Headlight relay circuit
- DRL relay circuit
- Taillight relay circuit
- Wireless door lock control circuit
- Open door warning light circuit
- Park / Neutral position switch circuit
- Alternator signal circuit
- Memory switch circuit (W/ memory)
- Power source circuit (Body ECU (Sub))
- Taillight circuit
- Stop light circuit
- Illumination circuit (Body ECU (Main) Control)
- Illumination circuit (Body ECU (Sub) Control)
- Rear wiper switch circuit
- Rear wiper motor and relay circuit
- Reverse signal circuit
- Speed signal circuit