LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2003 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 168 (Engine Control System Self Diagnostics (1GR-FE)) >> Diagnostic Tests >> DTC P0230: Fuel Pump Primary Circuit >> Diagnosis & Repair
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Read freeze frame data using the hand-held tester or the OBD II scan tool, as freeze frame data records the engine conditions when a malfunction is detected.

For diagnosis and repair procedure, see Fig 1 & Fig 2 .

For ECM location, see Figure. For ECM connector view, see Figure. For testing of systems or components, see SYSTEM & COMPONENT TESTING - V6 & V8 article. For removal and installation of components, see REMOVAL & INSTALLATION - V6 & V8 article.

Fig 1: DTC P0230 Diagnostic Procedure (Steps 1-3)
G00232621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: DTC P0230 Diagnostic Procedure (Step 3 Cont. & Wiring Diagram)
G00232622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002