AmpPRO (AP4 interface): No Power / No Sound / No Remote Out

Symptoms

• Symptoms may include the interface not turning on, the factory radio not turning on (AP4-CH41 only), no audio, or intermittent audio on one or more channels.

Cause

• Pins pulling out of the JST connector that plugs into the AP4 interface, resulting in poor or no connection of some circuits.

Solution

• Locate pins that have pulled out of the connector and fully re-insert the pins into the harness.
  If a pin has pulled completely out of the harness, see “AP4 Connector Diagrams” starting on page 2 for pinouts of each of the amp pro interfaces to find pin location information.
• Follow the procedure outlined in the tech brief below to understand the problem and how to fix it.

Search Keywords: ap4-ch21, ap4-ch31, ap4-ch42, apr-fd11, ap4-fd21, ap4-fd31, ap4-fd32, ap4-gm61, ap4-gm71, ap4-gm81, ap4-ty11, ap4-ty12, ap4-ty13, ap4-ty14, ap4ch21, ap4ch31, ap4ch42, aprfd11, ap4fd21, ap4fd31, ap4fd32, ap4gm61, ap4gm71, ap4gm81, ap4ty11, ap4ty12, ap4ty13, ap4ty14