Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

For wiring diagram, see Fig 1. For diagnosis and repair, see Fig 2-Fig 7 . To identify circuits referenced in testing, see appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article. For vacuum hose routing, see VACUUM DIAGRAMS article. For testing of systems or components, see BASIC DIAGNOSTIC PROCEDURES - 4-CYL article or SYSTEM & COMPONENT TESTING - 4-CYLINDER article. For removal and installation of components, see REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article. For adjustments, see ON-VEHICLE ADJUSTMENTS - 4-CYLINDER article. To check intermittent problems, see INTERMITTENT PROBLEM CHECK under SELF-DIAGNOSTIC SYSTEM.

Fig 1: DTCs P0300-P0304 Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTCs P0300-P0304 Diagnostic Procedure (Steps 1-2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: DTCs P0300-P0304 Diagnostic Procedure (Steps 3-4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: DTCs P0300-P0304 Diagnostic Procedure (Steps 5-6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: DTCs P0300-P0304 Diagnostic Procedure (Step 7)

Fig 6: DTCs P0300-P0304 Diagnostic Procedure (Steps 8-12)

Fig 7: DTCs P0300-P0304 Diagnostic Procedure (Steps 13-16)