IGNITION SYSTEM — On-Vehicle Inspection (7M-GTE) IG-15 INSPECTION OF IGNITER 1. CHECK POWER SOURCE LINE VOLTAGE (a) Disconnect the connector 6-P. (b) Turn the ignition switch ON. (c) Using a voltmeter, connect the positive (+) probe to terminal 3 of the harness side and negative (—) probe to body ground. Voltage: Approx. 12 V (d) Connect the connector 6-P. 2. CHECK POWER TRANSISTOR IN IGNITER (a) Disconnect the connector 4-P. (b) Disconnect each ignition coil from its connector. (c) Turn the ignition switch ON. (d) Using an ohmmeter, connect terminal 2 of ignition coil C and body ground. (e) Using a 3V dry cell battery, apply voltage to terminal 2 of connector 4-P. As voltage is applied, check that there is momentary continuity. (f) Using an ohmmeter, connect terminal 2 of ignition coil A and body ground. (g) Using a 3V dry cell battery, apply voltage to terminal 4 of the 4-P connector. (h) With terminal 4 connected apply voltage to terminal 2 of connector 4-P. As you apply voltage, check that there is momentary continuity. (i) Using an ohmmeter, connect terminal 2 of ignition coil B and body ground. (j) Using a 3V dry cell battery, apply voltage to terminal 3 of the 4-P connector. (k) With terminal 3 connected apply voltage to terminal 2 of connector 4-P. As you apply voltage, check that there is momentary continuity.