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Home >> Chevrolet >> 2010 >> Cobalt LS, 4D Sedan, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Audio System) >> Symptom Troubleshooting >> Audio-navigation unit power switch will not turn off (with navigation)

Audio-navigation unit power switch will not turn off (with navigation)

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
  • Check for aftermarket accessories plugged into the vehicle's accessory power sockets.
  • Check the connectors for poor connections or loose terminals.
  1. Turn the ignition switch to ON (II).
  2. Push the power switch button OFF or turn the ignition switch to LOCK (0) to see if the audio-navigation unit turns OFF.

    Does the audio-navigation unit turn off? 

    YES  -Operation is normal.

    NO  -go to step 3.

  3. Turn the ignition switch to LOCK (0).
  4. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 14 and body ground.
Fig 1: Measuring Voltage Between Audio-Navigation Unit Connector A (24P) Terminal No. 14 And Body Ground
G06431829Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage? 

YES  -Check for short to power on the PUR wire.

NO  -Substitute a known-good audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit.