Dodge Ram Truck 1500-2500-3500. Manual — part 623

RIGHT AUDIO INPUT SHORT TO GROUND (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on.

•

Set Condition:
The Hands Free Module detects low voltage on the (X704) Right Audio Output circuit.

Possible Causes

(X704) RIGHT AUDIO OUTPUT CIRCUIT OPEN

(X704) RIGHT AUDIO OUTPUT CIRCUIT SHORT TO GROUND

(X795) COMMON AUDIO OUTPUT CIRCUIT OPEN

(X704) RIGHT AUDIO OUTPUT CIRCUIT SHORT TO (X795) COMMON AUDIO OUTPUT CIRCUIT

HANDS FREE MODULE

Diagnostic Test

1.

CHECK FOR ACTIVE DTC

Turn the ignition on.

With the DRB, erase the HFM DTCs.

Attempt to make a phone call using the system.

With the DRB, read the HFM DTCs.

Did this DTC reset?

Yes

>> Go To 2

No

>> The condition that set this DTC is no longer present. Using the wiring diagram/schematic as a guide,

inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness con-
nectors for broken, bent, pushed out, and corroded terminals.

8T - 56

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

DR/DH

RIGHT AUDIO INPUT SHORT TO GROUND (CONTINUED)

2.

(X704) RIGHT AUDIO OUTPUT CIRCUIT OPEN

Turn the ignition off.

Disconnect the Hands Free Module harness connector.

Disconnect the Radio C2 harness connector.

Measure the resistance of the (X704) Right Audio Output circuit
between the HFM connector and the radio connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 3

No

>> Repair the (X704) Right Audio Output circuit for an open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

3.

(X704) RIGHT AUDIO OUTPUT CIRCUIT SHORT TO GROUND

Measure the resistance between ground and the (X704) Right Audio
Output circuit.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (X704) Right Audio Output circuit for short to

ground.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Go To 4

DR/DH

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

8T - 57

RIGHT AUDIO INPUT SHORT TO GROUND (CONTINUED)

4.

(X795) COMMON AUDIO OUTPUT CIRCUIT OPEN

Measure the resistance of the (X795) Common Audio Output circuit
between the HFM connector and the radio connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 5

No

>> Repair the (X795) Common Audio Output circuit for an

open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

5.

(X704) RIGHT AUDIO OUTPUT CIRCUIT SHORT TO (X795) COMMON AUDIO OUTPUT CIRCUIT

Measure the resistance between the (X704) Right Audio Output circuit
and the (X795) Common Audio Output circuit.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (X704) Right Audio Output circuit for a short to

the (X795) Common Audio Output circuit.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

No

>> Inspect the wiring and connectors for damage or shorted

circuits. If ok, replace and program the Hands Free Mod-
ule in accordance with the service information.

Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST - VER 1.)

8T - 58

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

DR/DH

RIGHT AUDIO INPUT SHORT TO VOLTAGE

DR/DH

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

8T - 59