Starter Signal Circuit: Highlander

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

For starter signal circuit inspection and wiring diagram, see Fig 1-Fig 4 . For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS.

Fig 1: Starter Signal Wiring Diagram (Highlander)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Starter Signal Control Circuit Using Hand-Held Tester (Highlander)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Starter Signal Control Circuit Inspection Using OBD II Scan Tool (Highlander)

Fig 4: Locating Data Link Connector No. 3 (Highlander)