Camry CNG & Gasoline Models, Camry Solara, RAV4, Tacoma 2.4L 4-Cyl. Except Calif. Emission Vehicles, Tacoma 2.7L 4-Cyl. Except Calif. Emission Vehicles & 4Runner 2.7L 4-Cyl. Except Calif. Emission Vehicles

Ignition coil primary resistance cannot be checked. Only ignition coil secondary resistance may be checked. Disconnect spark plug wires and electrical connectors from ignition coil.

Using ohmmeter, check ignition coil secondary resistance between spark plug wire terminals on ignition coil. See Fig 1. Ensure ignition coil secondary resistance is within specification. See IGNITION COIL RESISTANCE table. Replace ignition coil if ignition coil secondary resistance is not within specification. See IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article. Reinstall spark plug wires and electrical connector.

Fig 1: Checking Ignition Coil Secondary Resistance (Camry CNG & Gasoline Models, Camry Solara, RAV4, Tacoma 2.4L Except Calif. Emission Vehicles, Tacoma 2.7L Except Calif. Emission Vehicles & 4Runner 2.7L Except Calif. Emission Vehicles)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

IGNITION COIL RESISTANCE - Ohms

Temperature

Primary

Secondary

Cold ⁽¹⁾

⁽²⁾

9700-16,700

Hot ⁽³⁾

⁽²⁾

12,400-19,600

⁽¹⁾	Cold is with temperature of 14-122°F (-10-50°C).

⁽²⁾	Primary ignition coil resistance cannot be measured.

⁽³⁾	Hot is with temperature of 122-212°F (50-100°C).