Output Current Test

Fig. 2 Current Output Test:

1. Disconnect battery ground cable and "Bat" lead from alternator output terminal.
2. Complete test connections as shown.
3. Remove air hose between engine controller and air cleaner.
4. On non-turbo models, connect a suitable jumper wire from green (R3) terminal to ground. Do not connect blue J2 circuit to ground. On turbo models, models, connect a suitable jumper wire from green R3 lead wire on dash side of black 8 way connector to ground. Do not connect blue J2 lead of 8 way wiring connector to ground.
5. On all models, connect battery ground cable, then START engine and operate at idle.
6. Adjust carbon pile rheostat and engine speed to obtain 15 volts at 1250 RPM. While increasing engine speed, do not allow voltage to exceed 16 volts.
7. If ammeter reading is not within limits, replace alternator. Refer to Starting and Charging/Charging System/Alternator/Specifications/Electrical.