Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2012CT 200H L4-1.8L (2ZR-FXE) HYBRIDREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTNAVIGATION SYSTEMTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSNAVIGATION SYSTEM (FOR HDD)NAVIGATION ECU POWER SOURCE CIRCUIT
2012 Lexus CT 200h L4-1.8L (2ZR-FXE) Hybrid
Navigation ECU Power Source Circuit
2012 Lexus CT 200h L4-1.8L (2ZR-FXE) HybridSECTION Navigation ECU Power Source Circuit
NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): Navigation ECU Power Source Circuit
- Navigation ECU Power Source Circuit
DESCRIPTION
This is the power source circuit to operate the navigation computer sub-assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (NAVIGATION COMPUTER SUB-ASSEMBLY POWER SOURCE)
(a) Disconnect the H60 navigation computer sub-assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.