Dodge Ram 2004, Service Manual

Page: 233 / 642

Symptom:
LOW VOLTAGE LEVEL
When Monitored and Set Condition:
LOW VOLTAGE LEVEL
When Monitored:
Set Condition: The radio detects lower than normal voltage.
POSSIBLE CAUSES
CHECK CHARGING SYSTEM
CHECK VOLTAGE LEVEL AT RADIO
RADIO
TEST ACTION APPLICABILITY
1 Check the charging system in accordance with the service information.
Is the charging system operating properly? All
Yes
→
Go To 2
No
→
Refer to the appropriate service information and repair as neces-
sary.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Radio harness connector.
Start the engine.
Measure the voltage of each Fused B+ circuit and the Fused Ignition Switch Output
circuit.
Is the voltage above or approximately 14 volts for each measurement? All
Yes
→
Go To 3
No
→
Repair the circuit for high resistance.
Perform BODY VERIFICATION TEST - VER 1.
3 Note: Reconnect all previously disconnected components.
Turn the ignition and Radio on.
With the DRBIII
t
, erase the audio DTC’s.
Start the engine.
With the DRBIII
t
, read the audio DTC’s.
Did this DTC reset?
All
Yes
→
Replace the Radio.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Test Complete.
219
AUDIO