Ic Ignition Unit Ground Circuit Check

1. Connect voltmeter negative lead to battery negative terminal. See Fig 1. Connect positive lead to exterior of vacuum controller. Pull high tension wire from distributor cap and ground it. Turn ignition switch to "START" position and observe voltmeter reading while cranking engine.
2. If voltage reads 0.5 volts or less on Stanza models, replace IC ignition unit. On all other models, proceed to PICK-UP COIL RESISTANCE CHECK. On all models, if voltage is greater than 0.5 volts, check distributor ground wiring from chassis to battery, including battery connections. If ground is good, replace IC ignition unit.

Fig 1: Voltmeter Hookup for IC Ignition Unit Ground Circuit Check

Courtesy of NISSAN NORTH AMERICA, INC.

This hookup applies to all Datsun models.