Inspect Charging Circuit With Load - Toyota 1PZ Repair Manual

26.0 28.7 V
13.5 15.0V
10 A
CHARGING SYSTEM - On-Vehicle Inspection
(b) Check the charging circuit as follows:
Standard amperage: 10 A or less
Standard voltage:
If the voltmeter reading is more than standard voltage,
CH0704
replace the IC regulator.
If the voltmeter reading is less than standard voltage, check
the IC regulator and alternator as follows:
CH0894
7.

INSPECT CHARGING CIRCUIT WITH LOAD

(a) With the engine running at 2,000 rpm, turn on the
(b) Check the reading on the ammeter.
Standard amperage:
CH0838
If the ammeter reading is less than standard amperage,
repair the alternator. (See page CH-8)
HINT: With the battery fully charged, the indication will
sometimes be less than standard amperage.
CH0839
With the engine running from idling to 2,000 rpm,
check the reading on the ammeter and voltmeter.
12 V type 14.0-15.0 V at 25°C (77°F)
13.5-14.3 V at 135°C (275° F)
24 V type 27.7-28.7 V at 25°C (77°F)
26.0-28.7 V at 135°C (275°F)
• With terminal F grounded, start the engine and
check the voltmeter reading of terminalB.
• If the voltmeter reading is greater than standard ,
voltage, replace the IC regulator.
• If the voltmeter reading is less than standard volt-
age, check the alternator.
high beam headlights and place the heater blower
switch at "HI".
12 V 45, 55, 60, 80 A type
12 V 100 A type
24 V 30 A type
24 V 55 A type
CH-7
30 A or more
40 A or more
15 A or more
30 A or more