Jeep Grand Cherokee WK. Manual — part 719
B1436-VOICE RECOGNITION/PHONE SWITCH INPUT 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 voltage below 0.6 volts on the (X730) Voice Recognition/Phone Switch Signal
circuit.
Possible Causes
INSIDE REAR VIEW MIRROR
(X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORT TO (X835) SENSOR GROUND
CIRCUIT
(X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORT TO GROUND
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.
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.
Is the voltage above 4.7 volts?
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
>> Go To 3
8T - 22
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
WK
B1436-VOICE RECOGNITION/PHONE SWITCH INPUT CIRCUIT LOW (CONTINUED)
3.
(X730) VOICE/RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORTED TO THE (X835) SENSOR
GROUND CIRCUIT
Turn the ignition off.
Disconnect the Hands Free Module harness connector.
Measure the resistance between the (X730) Voice Recognition/Phone
Switch Signal circuit and the (X835) Sensor Ground circuit.
Is the resistance below 100.0 ohms?
Yes
>> Repair the (X730) Voice Recognition/Phone Switch Signal
circuit for a short to the (X835) Sensor Ground circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No
>> Go To 4
4.
(X730) VOICE/RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (X730) Voice Recog-
nition/Phone Switch Signal circuit.
Is the resistance below 100.0 ohms?
Yes
>> Repair the (X730) Voice Recognition/Phone Switch Signal
circuit for a short to ground.
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 Mod-
ule in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
WK
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 23
B1437-VOICE RECOGNITION/PHONE SWITCH INPUT CIRCUIT HIGH
8T - 24
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
WK
B1437-VOICE RECOGNITION/PHONE SWITCH INPUT CIRCUIT HIGH (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module detects voltage above 4.7 volts on the (X730) Voice Recognition/Phone Switch Signal
circuit.
Possible Causes
(X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT SHORT TO VOLTAGE
(X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL CIRCUIT OPEN
(X835) SENSOR GROUND CIRCUIT OPEN
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.
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.
Measure the voltage of the (X730) Voice Recognition/Phone Switch
Signal circuit.
Is the voltage above 5.3 volts?
Yes
>> Repair the (X730) Voice Recognition/Phone Switch Signal
circuit for a short to voltage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).
No
>> Go To 3
WK
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 25
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст