Dodge Durango (HB). Manual — part 540
U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2 (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 Right Side Impact Sensor 2
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 Right Side Impact Sensor 2 do not establish and maintain valid data
communications.
Possible Causes
(R18) SIGNAL CIRCUIT SHORTED TO BATTERY
(R18) SIGNAL CIRCUIT SHORTED TO GROUND
(R18, R20) RIGHT SIDE IMPACT SENSOR 2 CIRCUITS SHORTED TOGETHER
(R20) RIGHT SIDE IMPACT SENSOR 2 GROUND CIRCUIT OPEN
(R18) RIGHT SIDE IMPACT SENSOR 2 SIGNAL CIRCUIT OPEN
ORC, RIGHT SIDE IMPACT SENSOR 2
Diagnostic Test
1.
VERIFY THAT DTC U0176- LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION
SENSOR 2
Turn the ignition on.
With the scan tool, read ORC DTCs.
NOTE: Ensure the battery is fully charged.
NOTE: When reconnecting Airbag system components, the igni-
tion must be turned off and the battery must be disconnected.
Does the scan tool display active: U0176- LOST COMMUNICA-
TION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2?
Yes
>> Go To 2
No
>> Go To 9
HB
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 429
U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2 (CONTINUED)
2.
CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR 2 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 Right front Impact Sensor 2 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 (R18) Right Side Impact Sensor 2 Signal
circuit and (R20) Sensor Ground circuit at the Right Side Impact Sen-
sor 2 connector and ground.
Is there any voltage present?
Yes
>> Repair the (R18, R20) Right Side Impact Sensor 2 circuits
for a short to battery.
Perform the ORC VERIFICATION TEST - VER 1.
No
>> Go To 3
3.
CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 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 (R18) Right Side Impact Sensor 2 Sig-
nal circuit between the Right Side Impact Sensor 2 connector and
ground.
Is the resistance below 100K ohms?
Yes
>> Repair the (R18) Right Side Impact Sensor 2 Signal circuit
for a short to ground.
Perform the ORC VERIFICATION TEST - VER 1.
No
>> Go To 4
4.
CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TOGETHER
Measure the resistance between the (R18) Right Side Impact Sensor
2 Signal and (R20) Sensor Ground circuits at the Right Side Impact
Sensor 2 connector.
Is the resistance below 100K ohms?
Yes
>> Repair the (R18, R20) Right Side Impact Sensor 2 circuits
shorted together.
Perform the ORC VERIFICATION TEST - VER 1.
No
>> Go To 5
8O - 430
RESTRAINTS - ELECTRICAL DIAGNOSTICS
HB
U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2 (CONTINUED)
5.
CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 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 (R20) Right Side Impact Sensor 2
Ground circuit between the Right Side Impact Sensor 2 connector and
the 8443 Load Tool ORC Adaptor.
Is the resistance below 1 ohm?
Yes
>> Go To 6
No
>> Repair the (R20) Right Side Impact Sensor 2 Ground cir-
cuit for an open or high resistance.
Perform the ORC VERIFICATION TEST - VER 1.
6.
CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 CIRCUIT
FOR AN OPEN OR HIGH RESISTANCE
Measure the resistance of the (R18) Right Side Impact Sensor 2 Sig-
nal circuit between the Right Side Impact Sensor 2 connector and the
8443 Load Tool ORC Adaptor.
Is the resistance below 1 ohm?
Yes
>> Go To 7
No
>> Repair the (R18) Right Side Impact Sensor 2 Signal circuit
for an open or high resistance.
Perform the ORC VERIFICATION TEST - VER 1.
HB
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 431
U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2 (CONTINUED)
7.
CHECK OPERATION OF THE RIGHT SIDE IMPACT SENSOR 2
Replace the Right Side Impact Sensor 2.
Reconnect the vehicle body harness to the impact sensor.
Remove any special tools or jumper wires and reconnect all previously
disconnected components - except the Battery.
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 cur-
rent 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 Right Side Impact Sensor 2 DTC return?
Yes
>> Go To 8
No
>> Repair is complete.
Perform the ORC VERIFICATION TEST - VER 1.
8.
REPLACE THE OCCUPANT RESTRAINT CONTROLLER
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes before proceeding.
WARNING: If the airbag control module is dropped at any time, it must be replaced. Failure to take the
proper precautions could result in accidental airbag deployment and personal injury or death.
If there are no possible causes remaining, view repair.
Repair
Replace the Occupant Restraint Controller in accordance with Service Instructions.
Perform the ORC VERIFICATION TEST - VER 1.
8O - 432
RESTRAINTS - ELECTRICAL DIAGNOSTICS
HB
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