Generator Signal Circuit: Procedure

WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - GENERATOR)

Disconnect the connector from the A/C amplifier.
Disconnect the connector from the generator.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
E63-24 (ALT) - B14-3 (M)	Always	Below 1 Ω
E63-24 (ALT) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT GENERATOR

Inspect the generator.

for 2AZ-FE:
Inspect the generator. Refer to ON-VEHICLE INSPECTION for On-vehicle Inspection. Refer to INSPECTION for Inspection).

for 2ZR-FE:

Inspect the generator. Refer to ON-VEHICLE INSPECTION for On-vehicle Inspection. Refer to INSPECTION for Inspection).

Result

Result	Proceed to
OK	A
NG (for 2AZ-FE)	B
NG (for 2ZR-FE)	C

C → See step 4

B → See step 3

A → See step 5

REPLACE GENERATOR (for 2AZ-FE). Refer to REMOVAL
REPLACE GENERATOR (for 2ZR-FE). Refer to REMOVAL
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE