Operation CHARM: Car repair manuals for everyone.
Home >> Toyota >> 1997 >> RAV4 2-Door 4WD L4-2.0L (3S-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Relays and Modules - HVAC >> Control Module HVAC >> Testing and Inspection
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Control Module HVAC: Testing and Inspection

1. REMOVE GLOVE COMPARTMENT DOOR


2. INSPECT AMPLIFIER CIRCUIT









a. Disconnect the connector and inspect the connector on the wire harness side. as shown in the chart.

Test conditions:
- Ignition switch ON
- Temperature control dial MAX COOL
- Blower dial HI

If circuit is as specified, try replacing the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other parts.










b. Connect the connector to A/C amplifier and inspect wire harness side connector from the back side, as shown.

Tester condition:
- Ignition switch ON
- A/C Switch ON
- Temperature control dial MAX COOL
- Blower control lever HI
- Install manifold gauge set

If circuit is as specified, try replacing the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other parts.

pro multis · About Operation CHARM