Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FUSE (A/C)

Remove the A/C fuse from the cowl side junction block LH.

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

Standard Resistance

STANDARD RESISTANCE SPECIFICATIONS

Tester Item	Condition	Specified Condition
A/C fuse	Always	Below 1 Ω

Fig 1: Identifying A/C Fuse

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NG: REPLACE FUSE (A/C)

OK: Go to next step

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

Disconnect the A/C amplifier connector.

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

Standard Voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connection	Condition	Specified Condition
J58-1 (B) - Body ground	Always	11 to 14 V

Fig 2: Identifying J58 Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )