LEMON Manuals: Even more car manuals for everyone: 1960-2025
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 B1780 >> Test Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test Description

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.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  After clearing the DTCs and theft information, the radio relearns the VIN upon cycling the ignition switch.
  2. 3:  After completing the repair procedure, clear all DTCs.
DTC B1780

Step Action Yes No
1 Did you perform the Diagnostic System Check-Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
  1. Install a scan tool.
  2. Use the scan tool to clear the DTCs.
  3. Perform radio setup procedure. Refer to Radio Setup .
Does the DTC Reset?
Go to Step 3  System OK
Replace the radio. Refer to Control Module References for replacement, setup and programming.
Did you complete the replacement?
System OK -