Dodge Caliber. Manual — part 554
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module detects voltage between 2.8 volts and 3.3 volts on the (X730) Voice Recognition/
Phone Switch Signal circuit for more than 30 seconds.
Possible Causes
INSIDE REAR VIEW MIRROR
HANDS FREE MODULE
Diagnostic Test
1.
CHECK FOR ACTIVE DTCS
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.
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.
2.
CHECK THE VOLTAGE OF THE (X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL
Turn the ignition off.
Disconnect the Inside Rear View Mirror C2 harness connector.
Turn the ignition on.
With the scan tool, monitor the VR Phone Switch voltage.
While monitoring the VR Phone Switch voltage, momentarily connect a
jumper wire between (X730) Voice Recognition/Phone Switch Signal
circuit and ground.
NOTE: The scan tool sensor voltage should switch from above 4.7
volts when the jumper is not connected to below 0.6 volts when
the jumper is connected.
Does the sensor voltage switch from above 4.7 volts to below
0.6 volt as described?
Yes
>> Replace the Inside Rear View Mirror in accordance with the
service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No
>> 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 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
PM
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 29
B145A-TELEMATICS MIRROR CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
8T - 30
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
PM
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module detects high voltage on the (X793) Microphone Feed circuit.
Possible Causes
(X793) MICROPHONE FEED CIRCUIT OPEN
(X793) MICROPHONE FEED CIRCUIT SHORT TO VOLTAGE
INSIDE REAR VIEW 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.
2.
(X793) MICROPHONE FEED CIRCUIT OPEN
Turn the ignition off.
Disconnect the Hands Free Module harness connector.
Disconnect the Inside Rear View Mirror C2 harness connector.
Measure the resistance of the (X793) Microphone Feed circuit between
the HFM connector and the inside rear view 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 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
PM
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 31
3.
(X793) MICROPHONE FEED CIRCUIT SHORT TO VOLTAGE
Turn the ignition on.
Measure the voltage of the (X793) Microphone Feed circuit.
Is the voltage above 1.0 volt?
Yes
>> Repair the (X793) Microphone Feed circuit for short to volt-
age.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No
>> Go To 4
4.
INSIDE REAR VIEW MIRROR
Replace the Inside Rear View 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 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No
>> Repair is complete.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
8T - 32
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
PM
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