Multi Display - Inspection/Diagnostic Procedures
ELECTRICALEL004-99
April 9, 1999
Title:
INSPECTION OF MULTI DISPLAY
Models:
'99 RX 300
Introduction
Inspection procedures have been developed to diagnose the Multi Display Assembly. The Electrical Wiring Diagram should be used in conjunction with this bulletin to aid in diagnosing the system.
PUBLICATION NUMBER PUBLICATION NAME REFERENCE PAGES
EWD337U '99 RX 300 204 & 274
Electrical Wiring Diagram
Affected Vehicles
^ All 1999 RX 300's
Inspection Procedures
1. Inspect The Connector:
Check the integrity of the circuit by verifying that the pins are properly seated in the connector.
Warranty Information
2. Inspect Multi Display Assembly Circuit:
Disconnect the connector from the Multi Display Assembly and inspect the connector on the wire harness side, as shown in the table.
NOTE:
The signals to and from terminals 4,5,6,7 are serial data. Therefore, they cannot ordinarily be measured with a Volt/Ohm Meter.
3. Inspect The Harness:
Verify that there are no open or short circuits in the system by checking between the following:
A. Radio Receiver Assembly and the Multi Display.
B. Multi Display and the Instrument Control Panel.
If circuit is as specified replace the Multi Display Assembly.