Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT NAVIGATION ECU ASSY(+B, ACC, GND)
- Remove the navigation ECU assy.
- Check continuity between the terminals at each condition, as shown in the chart.
Standard:
TESTER CONNECTION & SPECIFIC CONDITION.Tester connection Condition Specified condition GND - Body ground Always Continuity - Check the voltage between the terminals at each condition, as shown in the chart.
Standard:
TESTER CONNECTION & SPECIFIC CONDITIONTester connection Condition Specified condition +B - GND Always 10 to 14 V ACC - GND Ignition SW ACC 10 to 14 V
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: Go to next step.
- CHECK FOR PROBLEM SYMPTOMS TABLE
- Check the problem symptoms table (See
PROBLEM SYMPTOMS TABLE ).PROBLEM SYMPTOMS
A Suspected areas are cleared B Suspected areas still exist
- B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- A: REPLACE NAVIGATION ECU ASSY (See REPLACEMENT )
- Check the problem symptoms table (See
PROBLEM SYMPTOMS TABLE ).