B146C
B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGHB146C-Channel 3 Audio Speaker Output Circuit High:
WHEN MONITORED
With the ignition on.
SET CONDITION
The Amplifier detects a short to battery condition on the output circuit.
POSSIBLE CAUSES
- (X201) amplified left front door speaker (+) circuit short to voltage
- (X291) amplified left front door speaker (-) circuit short to voltage
- Amplifier
DIAGNOSTIC TEST
1. CHECK FOR AN INTERMITTENT CONDITION
Turn the ignition on, then off, and then on again.
With the scan tool, read Amplifier DTCs.
Q: Does the scan tool display active: B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH?
YES: Go To 2
NO: The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform BODY VERIFICATION TEST VER-1. Body Verification Test
2. CHECK FOR VOLTAGE ON THE (X201) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT
Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Amplified Left Front Door Speaker harness connector.
Turn the ignition on.
Measure for voltage on the (X201) Amplified Left Front Door Speaker (+) circuit.
Q: Is the voltage above 10.0 volts?
YES: Repair the (X201) Amplified Left Front Door Speaker (+) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. Body Verification Test
NO: Go To 3
3. CHECK FOR VOLTAGE ON THE (X291) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT
Measure for voltage on the (X291) Amplified Left Front Door Speaker (-) circuit.
Q: Is the voltage above 10.0 volts?
YES: Repair the (X291) Amplified Left Front Door Speaker (-) circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1. Body Verification Test
NO: Replace the Amplifier. Perform BODY VERIFICATION TEST VER-1. Body Verification Test