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Spark Test

NOTE: ES300 uses a Distributorless Ignition System (DIS). Separate ignition coil for each cylinder is located on valve covers.
CAUTION: To prevent fuel from being injected during cranking in the following procedure, crank engine for no more than 1-2 seconds at a time.
  1. Unplug ignition coil connector. Remove ignition coil. Remove spark plug. Connect spark plug to coil and reconnect ignition coil connector. Ground the spark plug.
  2. Check plug for spark while cranking engine. If spark is not present, turn ignition off. Check ignition coil, ignitor and distributor connectors. Repair as necessary. If connections are good, check for voltage at positive terminal (Black/Orange wire) of ignition coil connector and ignitor.
  3. If battery voltage is not present, repair circuit. If battery voltage is present, check resistance between terminals of ignition coil connector (ignition coil primary resistance). If resistance is not as specified, replace ignition coil. See IGNITION COIL RESISTANCE  table.
  4. If resistance is as specified, check resistance between terminals of camshaft position sensor. See SENSOR RESISTANCE  table. If resistance is not as specified, replace camshaft position sensor. If resistance is as specified, check resistance between terminals of crankshaft position sensor. See SENSOR RESISTANCE  table.
  5. If resistance is not as specified, replace crankshaft position sensor. If resistance is as specified, check for ignitor circuit malfunction. See procedure for Code P1300 in TESTS W/CODES - OBD-II article in the ENGINE PERFORMANCE section. If ignitor circuit is okay, replace ignitor.
IGNITION COIL RESISTANCE - Ohms

Application Primary Secondary
Cold (1) .54-.84 (2)
Hot (3) .68-.98 (2)
(1) Coil temperature of 14-122°F (-10-50°C).
(2) Information is not available from manufacturer.
(3) Coil temperature of 123-212°F (51-100°C).
SENSOR RESISTANCE

Application Ohms
Camshaft Sensor
Cold (1) 835-1400
Hot (2) 1060-1645
Crankshaft Sensor
Cold (1) 1630-2740
Hot (2) 2060-3225
(1) Sensor temperature of 14-122°F (-10-50°C).
(2) Sensor temperature of 123-212°F (51-100°C).
Fig 1: Checking Right Camshaft Sensor Resistance (Left Is Similar)
G93B78189Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Checking Crankshaft (Engine Speed) Sensor Resistance
G90E18881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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