Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
For diagnosis and repair with hand-held tester, see DIAGNOSIS & REPAIR (USING HAND-HELD TESTER) under DTC P0504. For diagnosis and repair using OBD II scan tool, see DIAGNOSIS & REPAIR (USING OBD-II SCAN TOOL) under DTC P0504.