Dodge Ram Truck 1500-2500-3500. Manual — part 626

RIGHT AUDIO OUTPUT 1 SHORT TO VOLTAGE (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on.

•

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

Possible Causes

(X704) RIGHT AUDIO OUTPUT CIRCUIT OPEN

(X795) COMMON AUDIO OUTPUT CIRCUIT OPEN

(X704) RIGHT AUDIO OUTPUT CIRCUIT SHORT TO VOLTAGE

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.

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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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RIGHT AUDIO OUTPUT 1 SHORT TO VOLTAGE (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.)

DR/DH

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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RIGHT AUDIO OUTPUT 1 SHORT TO VOLTAGE (CONTINUED)

3.

(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 4

No

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

open.

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

4.

(X704) RIGHT AUDIO OUTPUT CIRCUIT SHORT TO VOLTAGE

Turn the ignition on.

Measure the voltage of the (X704) Right Audio Output circuit.

Is the voltage above 1.0 volts?

Yes

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

voltage.

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.)

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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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ROM CHECKSUM ERROR

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on.

•

Set Condition:
The Hands Free Module detects a fault during an internal diagnostic check.

Possible Causes

HANDS FREE MODULE

Diagnostic Test

1.

ERASE DTC AND ATTEMPT TO RESET

Turn the ignition on.

With the DRB, read and record the HFM DTC’s and then erase the DTC’s.

Perform 5 ignition key cycles, leaving the ignition key on for a minimum of 90 seconds per cycle.

With the DRB, read the HFM DTC’s.

Did this DTC reset?

Yes

>> Replace and program the Hands Free Module in accordance with the service information.

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

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.

DR/DH

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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