Jeep Grand Cherokee WK. Manual — part 586
B1B71-UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR INTERNAL (CONTINUED)
For the Airbag System circuit diagram (Refer to 8 - ELECTRICAL/RESTRAINTS - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
The Occupant Restraint Controller (ORC) continuously communicates with the Front Right Impact Sensor over
the sensor signal circuit. The sensor communication and on board diagnostics are powered by the ORC signal.
•
Set Condition:
This code will set, if the ORC and the Front Right Impact Sensor do not establish and maintain valid data
communications.
Possible Causes
(R80) SIGNAL CIRCUIT SHORTED TO BATTERY
(R80) SIGNAL CIRCUIT SHORTED TO GROUND
(R80, R82) FRONT RIGHT IMPACT SENSOR CIRCUITS SHORTED TOGETHER
(R82) FRONT RIGHT IMPACT SENSOR GROUND CIRCUIT OPEN
(R80) FRONT RIGHT IMPACT SENSOR SIGNAL CIRCUIT OPEN
ORC, FRONT RIGHT IMPACT SENSOR
Diagnostic Test
1.
VERIFY THAT DTC B1B71-UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR INTERNAL IS
ACTIVE
NOTE: Ensure the battery is fully charged.
NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must
be disconnected.
Turn the ignition on.
With the scan tool, read ORC DTCs.
Does the scan tool display active: B1B71-UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR INTER-
NAL?
Yes
>> Go To 2
No
>> Go To 9
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
WK
B1B71-UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR INTERNAL (CONTINUED)
2.
CHECK THE (R80, R82) FRONT RIGHT IMPACT SENSOR SIGNAL AND GROUND CIRCUITS FOR A
SHORT TO BATTERY
WARNING: To avoid personal injury or death, turn the ignition off,
disconnect the battery and wait two minutes before proceeding.
Disconnect the Front Right Impact Sensor connector.
Disconnect the ORC connector.
WARNING: To avoid personal injury or death, turn the ignition on,
then reconnect the battery.
Measure the voltage of the (R80) Front Right Impact Sensor Signal
circuit and (R82) Sensor Ground circuit at the Front Right Impact Sen-
sor connector and ground.
Is there any voltage present?
Yes
>> Repair the (R80, R82) Front Right Impact Sensor circuits
for a short to battery.
Perform the ORC VERIFICATION TEST - VER 1.
No
>> Go To 3
3.
CHECK THE (R80) FRONT RIGHT IMPACT SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
WARNING: To avoid personal injury or death, turn ignition on,
then reconnect the battery.
Measure the resistance of the (R80) Front Right Impact Sensor Signal
circuit between the Front Right Impact Sensor connector and ground.
Is the resistance below 100K ohms?
Yes
>> Repair the (R80) Front Right Impact Sensor Signal circuit
for a short to ground.
Perform the ORC VERIFICATION TEST - VER 1.
No
>> Go To 4
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
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B1B71-UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR INTERNAL (CONTINUED)
4.
CHECK THE (R80, R82) FRONT RIGHT IMPACT SENSOR CIRCUITS FOR A SHORT TOGETHER
Measure the resistance between the (R80) Front Right Impact Sensor
Signal and (R82) Sensor Ground circuits at the Front Right Impact
Sensor connector.
Is the resistance below 100K ohms?
Yes
>> Repair the (R80, R82) Front Right Impact Sensor circuits
shorted together.
Perform the ORC VERIFICATION TEST - VER 1.
No
>> Go To 5
5.
CHECK THE (R82) FRONT RIGHT IMPACT SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH
RESISTANCE
Connect the 8443 Load Tool ORC Adaptor to the Occupant Control
Module connector.
Measure the resistance of the (R82) Front Right Impact Sensor
Ground circuit between the Front Right Impact Sensor connector and
the 8443 Load Tool ORC Adaptor.
Is the resistance below 1 ohm?
Yes
>> Go To 6
No
>> Repair the (R82) Front Right Impact Sensor 2 Ground cir-
cuit for an open or high resistance.
Perform the ORC VERIFICATION TEST - VER 1.
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
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B1B71-UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR INTERNAL (CONTINUED)
6.
CHECK THE (R80) FRONT RIGHT IMPACT SENSOR CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
Measure the resistance of the (R80) Front Right Impact Sensor Signal
circuit between the Front Right Impact Sensor connector and the 8443
Load Tool ORC Adaptor.
Is the resistance below 1 ohm?
Yes
>> Go To 7
No
>> Repair the (R80) Front Right Impact Sensor Signal circuit
for an open or high resistance.
Perform the ORC VERIFICATION TEST - VER 1.
7.
CHECK OPERATION OF THE FRONT RIGHT IMPACT SENSOR
Replace the Front Right Impact Sensor.
Reconnect the vehicle body harness to the impact sensor.
Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Bat-
tery.
WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.
Connect the scan tool to the Data Link Connector - use the most current software available.
Use the scan tool and erase the stored codes in all airbag system modules.
Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
Wait one minute, and read active codes and if there are none present read the stored codes.
Did the active Front Right Impact Sensor DTC return?
Yes
>> Go To 8
No
>> Repair is complete.
Perform the ORC VERIFICATION TEST - VER 1.
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
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