Dodge Ram 2004 Service Manual page 229

LEFT FRONT INPUT NO ACTIVITY —
TEST
3 Turn the ignition off.
Disconnect the Amplifier C1 harness connector.
Disconnect the Radio harness connector.
Measure the resistance of each left front speaker (+) and (-) circuit between the Radio
and the Amplifier.
Is the resistance below 5.0 ohms for each circuit?
Yes → Go To 4
→ Repair the speaker circuits for an open.
No
4 Turn the ignition off.
Reconnect the Radio harness connector.
Disconnect the Amplifier C1 harness connector.
Turn the ignition on and the Radio on to a known good radio station or have a tape
or CD playing.
Turn the radio volume control up at least 25 positions.
With the voltmeter in the AC voltage scale, measure the voltage of each left front
speaker circuit at the Amplifier C1 connector.
NOTE: Perform this test on each left front speaker circuit.
Is the voltage at least 120mV AC (0.12 VAC) on each speaker circuit?
Yes → Replace the Amplifier in accordance with the Service Information.
→ Replace the Radio.
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Continued
215
AUDIO
APPLICABILITY
All
All