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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1288 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Pontiac Torrent and 2007 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the rear video display harness connector.
  2. Ignition ON, Test for 100 to 300 Hz on the video display mode signal circuit terminal 10.
    • If 100 to 300 Hz is not present, repair open/high resistance, short to voltage, short to ground or replace the radio.
    • If 100 to 300 Hz is present, replace the rear video display.
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