Air Conditioning Amplifier - Toyota Hilux Surf 1993 Owner's Manual

Tester
Check for
connection
Continuity
Voltage
Resistance
AIR CONDITIONING SYSTEM

AIR CONDITIONING AMPLIFIER

INSPECTION OF AMPLIFIER
INSPECT AMPLIFIER CIRCUIT
Disconnect the amplifier and inspect the connector on
the wire harness side as shown in the chart below.
Test conditions:
Condition
Constant
Constant
Turn A/C switch on.
Turn A/C switch off.
Turn A/C switch on.
Turn A/C switch off.
Start the engine.
Stop the engine.
Turn A/C switch on.
Turn A/C switch off.
Constant
MAX COOL
MIN COOL
– Air Conditioning Amplifier
(1) Ignition switch: ON
(2) Temperature control lever: MAX COOL
(3) Blower switch: HI
Continuity
Continuity
Battery positive voltage
Battery positive voltage
Battery positive voltage
No voltage
Approx. 10 to 14 V
No voltage
Battery positive voltage
Battery positive voltage
Approx. 1.5 k
Approx. 0 0
Approx. 3 kW
If circuit is correct, replace the amplifier.
AC–31
Specified value
at 25 C (77 F)
W E E