Voyager V6-181 3.0L SOHC (1988)
Fig. 6 Alternator current output test
10.
On 1991-92 Jeep Cherokee, Comanche and Wrangler, connect suitable jumper wire to ground and K20 (green) lead wire at rear of alternator.
This will generate a fault code. Do not connect A142 (green/orange) lead wire to ground.
Fig. 3 Alternator output wire resistance test
11.
On all 1992 models except Jeep Cherokee, Comanche and Wrangler, connect suitable jumper wire to ground and K20 (green) lead wire at rear
of alternator. This will generate a fault code. Do not connect A142 (blue) lead wire to ground.
12.
On all models, start engine and operate at idle speed, then adjust carbon pile and engine speed in increments until a speed of 1250 RPM at 15
volts is obtained. Do not allow voltmeter range to exceed 16 volts during testing.
TEST RESULTS
1.
Note ammeter reading. Ammeter reading should be within specified limits noted in specification charts in individual truck chapters.
2.
If reading is less than specified and alternator wire resistance is not excessive, alternator is defective.
3.
After completion of current output test, turn off carbon pile and ignition switch, then disconnect battery ground cable.
