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Home >> Lexus >> 2010 >> IS 250 AWD V6-2.5L (4GR-FSE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Navigation ECU Communication Stop Mode
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Navigation ECU Communication Stop Mode





CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Navigation ECU Communication Stop Mode
- Navigation ECU Communication Stop Mode

DESCRIPTION





HINT
"AVN1" refers to the circuit that includes the navigation ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR OPEN IN CAN BUS WIRE (NAVIGATION ECU BRANCH WIRE)

(a) Turn the engine switch off.

(b) Disconnect the navigation ECU (display and navigation module display) connector.





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

Standard Resistance:





NG -- REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (NAVIGATION ECU BRANCH WIRE)
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

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





Standard Resistance:





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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

OK -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY (NAVIGATION ECU)
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