Dodge Dakota (ND). Manual — part 524

B1459-TELEMATICS MIRROR CONTROL CIRCUIT LOW (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 (X793) Microphone Feed circuit.

Possible Causes

(X793) MICROPHONE FEED CIRCUIT OPEN

(X793) MICROPHONE FEED CIRCUIT SHORT TO GROUND

INSIDE REARVIEW MIRROR

HANDS FREE MODULE

Diagnostic Test

1.

CHECK FOR ACTIVE DTC

With the scan tool, read the active DTC’s.

Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per
cycle.

Attempt to make a phone call with the system.

With the scan tool, read the active DTC’s.

Does the scan tool display this DTC as active?

Yes

>> Go To 2

No

>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-

nectors. Look for broken, bent, pushed out, or corroded terminals.

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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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B1459-TELEMATICS MIRROR CONTROL CIRCUIT LOW (CONTINUED)

2.

(X793) MICROPHONE FEED CIRCUIT OPEN

Turn the ignition off.

Disconnect the Hands Free Module harness connector.

Disconnect the Inside Rearview Mirror C2 harness connector.

Measure the resistance of the (X793) Microphone Feed circuit
between the HFM connector and the inside rearview mirror connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 3

No

>> Repair the (X793) Microphone Feed circuit for an open.

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

3.

(X793) MICROPHONE FEED CIRCUIT SHORT TO GROUND

Measure the resistance between ground and the (X793) Microphone
Feed circuit.

Is the resistance below 100.0 ohms?

Yes

>> Repair the (X793) Microphone Feed circuit for short to

ground.

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

No

>> Go To 4

ND

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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B1459-TELEMATICS MIRROR CONTROL CIRCUIT LOW (CONTINUED)

4.

INSIDE REARVIEW MIRROR

Replace the Inside Rearview Mirror in accordance with the service information.

Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per
cycle.

Attempt to make a phone call with the system.

With the scan tool, read the active DTC’s.

Does the scan tool display this DTC as active?

Yes

>> Inspect the wiring and connectors for damage or shorted circuits. If ok, 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

>> Repair is complete.

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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B1492–GENERAL MICROPHONE PERFORMANCE

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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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