Generator Signal Circuit

HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: Generator Signal Circuit
- Generator Signal Circuit

DESCRIPTION

When the engine is started, the generator rotates and a pulsed voltage signal is generated. This signal is used by the air conditioning amplifier. The generated voltage signals sent from the generator are used for controlling the number of the heater elements to be heated.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - GENERATOR)

(a) Disconnect the D17 air conditioning amplifier connector.

(b) Disconnect the B45 generator connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(d) Reconnect the generator connector.

(e) Disconnect the air conditioning amplifier connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT GENERATOR

(a) Inspect the generator.

w/o PTC Heater Component Tests and General Diagnostics for On Vehicle Inspection, 80A Type for Inspection)

w/ PTC Heater Component Tests and General Diagnostics for On Vehicle Inspection, 100A Type for Inspection)

Result





B -- REPLACE GENERATOR Removal

C -- REPLACE GENERATOR Removal

A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures