Test E: Loud Popping Sound When Cycling The Ignition Switch
PINPOINT TEST E: LOUD POPPING SOUND WHEN CYCLING THE IGNITION SWITCHNormal Operation
Voltage is sent through the start input circuit CBP22 (GN/OG) to the audio unit with the key in START. Upon receiving this signal, the audio unit mutes all speaker outputs to eliminate the possibility of speaker pops during engine cranking.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Subwoofer amplifier (Audiophile)
- Audio unit
E1:
E1-E2:
