Measure voltage between terminal RF CF of AC amplifier and body ground in each conditions as shown in the chart

Terminal

Condition

Voltage

RF ^ Body ground

Refrigerant pressure:

Below 1,520 kPa (15.5 kgf/cm2, 220 psi)

10 - 14 V

Refrigerant pressure:

Above 1,520 kPa (15.5 kgf/cm2, 220 psi)

Below 1.0 V

CF ^ Body ground

A/C switch: ON

Below 1.0 V

A/C switch: OFF

10 - 14 V

OK

I18160

Toyota Avalon Rdi Fuse Map

PREPARATION:

Remove RDI fuse and CDS fuse from engine room J/B. CHECK:

Check continuity of RDI fuse and CDS fuse. OK:

Continuity exists.

Check for short in all the harness and components connected to the RDI fuse (See attached wiring diagram).

OK

e

Check engine coolant temp. switch (See page AC-84).

7 Check harness and connector between A/C amplifier and pressure switch, pressure switch and body ground (See page IN-41).

8 Check harness and connector between A/C amplifier and water temp. switch, water temp. switch and body ground (See page IN-41).

Check and replace A/C amplifier.

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