B1B21
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 160
B1B21-RIGHT SIDE CURTAIN SQUIB 1 CIRCUIT HIGH
Theory of Operation
When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and the wiring. These
circuits are maintained in a "floating" configuration at the module, (connected to neither power nor ground), as protection against inadvertent
deployment. Use of the SRS Load Tool Kit 8443A in the tests below, substitutes a suspect squib with a known good component. The use of the SRS
Load Tool Adapter 8443A provides a test point, as well as a method for opening the shorting bar connections within the harness connector.
- When Monitored:
With the ignition on, the Occupant Restraint Controller (ORC) monitors the voltage on the Right Curtain Squib 1 circuits.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 161
- Set Condition:
When the ORC detects voltage on the Right Curtain Squib 1 circuits.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See: Restraints and Safety Systems/Testing and
Inspection/Initial Inspection and Diagnostic Overview/Restraints System Pre-Diagnostic Procedure.
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Make sure the battery is fully charged.
NOTE: The scan tool, SRS Airbag Load Tool MRL 8443A, and DVOM are required to perform the following test.
1. Select Active or Stored DTC.
Is the DTC active or stored?
ORC - ACTIVE DTC
- Go To 2
ORC - STORED DTC
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. . See: Restraints and Safety Systems/Testing and Inspection/Initial
Inspection and Diagnostic Overview/Restraints System Intermittent Condition Test
2. CHECK FOR SHORTED SQUIB CIRCUITS IN RIGHT SIDE CURTAIN AIRBAG
WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
1. Disconnect the Right Side Curtain Airbag connector.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 162
WARNING: Do not place an intact uncoupled curtain airbag face down on a hard surface, the airbag will propel into the air if accidentally
deployed. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Check the connectors - Clean and repair as necessary.
2. Connect the SRS Load Tool Kit 8443A and the SRS Load Tool Jumper 8443-8 to the Right Side Curtain Airbag connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
3. With the scan tool, read the active ORC DTCs.
Does the scan tool display: B1B21-RIGHT SIDE CURTAIN SQUIB 1 CIRCUIT HIGH?
Yes
- Go To 3
No
- Replace the Right Side Curtain Airbag.
- Perform the ORC VERIFICATION TEST. See: Verification Tests/Occupant Restraint Controller (ORC) Verification Test.
3. CHECK (R4) RIGHT CURTAIN SQUIB 1 LINE 1 CIRCUIT AND (R2) RIGHT CURTAIN SQUIB 1 LINE 2 CIRCUIT FOR A
SHORT TO BATTERY
WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
1. Disconnect the SRS Load Tool Kit 8443A and SRS Load Tool Jumper 8443-8 from the Right Side Curtain Airbag connector.
2. Disconnect the ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
3. Connect the SRS Load Tool Adaptor 8443-24 to the ORC C1 connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
4. Measure the voltage of the (R4) Right Curtain Squib 1 Line 1 circuit between the SRS Load Tool Adaptor 8443-24 and ground.
5. Measure the voltage of the (R2) Right Curtain Squib 1 Line 2 circuit between the SRS Load Tool Adaptor 8443-24 and ground.
Is there any voltage present on either circuit?
Yes
- Repair the Right Curtain Squib 1 circuit(s) for a short to battery.
- Perform the ORC VERIFICATION TEST. See: Verification Tests/Occupant Restraint Controller (ORC) Verification Test.
No
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 163
- WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
- WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these
instructions may result in possible serious or fatal injury.
- Replace the ORC.
- Perform the ORC VERIFICATION TEST. See: Verification Tests/Occupant Restraint Controller (ORC) Verification Test.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 160
B1B21-RIGHT SIDE CURTAIN SQUIB 1 CIRCUIT HIGH
Theory of Operation
When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and the wiring. These
circuits are maintained in a "floating" configuration at the module, (connected to neither power nor ground), as protection against inadvertent
deployment. Use of the SRS Load Tool Kit 8443A in the tests below, substitutes a suspect squib with a known good component. The use of the SRS
Load Tool Adapter 8443A provides a test point, as well as a method for opening the shorting bar connections within the harness connector.
- When Monitored:
With the ignition on, the Occupant Restraint Controller (ORC) monitors the voltage on the Right Curtain Squib 1 circuits.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 161
- Set Condition:
When the ORC detects voltage on the Right Curtain Squib 1 circuits.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See: Restraints and Safety Systems/Testing and
Inspection/Initial Inspection and Diagnostic Overview/Restraints System Pre-Diagnostic Procedure.
1. DETERMINE ACTIVE OR STORED DTC
NOTE: Make sure the battery is fully charged.
NOTE: The scan tool, SRS Airbag Load Tool MRL 8443A, and DVOM are required to perform the following test.
1. Select Active or Stored DTC.
Is the DTC active or stored?
ORC - ACTIVE DTC
- Go To 2
ORC - STORED DTC
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. . See: Restraints and Safety Systems/Testing and Inspection/Initial
Inspection and Diagnostic Overview/Restraints System Intermittent Condition Test
2. CHECK FOR SHORTED SQUIB CIRCUITS IN RIGHT SIDE CURTAIN AIRBAG
WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
1. Disconnect the Right Side Curtain Airbag connector.
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 162
WARNING: Do not place an intact uncoupled curtain airbag face down on a hard surface, the airbag will propel into the air if accidentally
deployed. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Check the connectors - Clean and repair as necessary.
2. Connect the SRS Load Tool Kit 8443A and the SRS Load Tool Jumper 8443-8 to the Right Side Curtain Airbag connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
3. With the scan tool, read the active ORC DTCs.
Does the scan tool display: B1B21-RIGHT SIDE CURTAIN SQUIB 1 CIRCUIT HIGH?
Yes
- Go To 3
No
- Replace the Right Side Curtain Airbag.
- Perform the ORC VERIFICATION TEST. See: Verification Tests/Occupant Restraint Controller (ORC) Verification Test.
3. CHECK (R4) RIGHT CURTAIN SQUIB 1 LINE 1 CIRCUIT AND (R2) RIGHT CURTAIN SQUIB 1 LINE 2 CIRCUIT FOR A
SHORT TO BATTERY
WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
1. Disconnect the SRS Load Tool Kit 8443A and SRS Load Tool Jumper 8443-8 from the Right Side Curtain Airbag connector.
2. Disconnect the ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
3. Connect the SRS Load Tool Adaptor 8443-24 to the ORC C1 connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
4. Measure the voltage of the (R4) Right Curtain Squib 1 Line 1 circuit between the SRS Load Tool Adaptor 8443-24 and ground.
5. Measure the voltage of the (R2) Right Curtain Squib 1 Line 2 circuit between the SRS Load Tool Adaptor 8443-24 and ground.
Is there any voltage present on either circuit?
Yes
- Repair the Right Curtain Squib 1 circuit(s) for a short to battery.
- Perform the ORC VERIFICATION TEST. See: Verification Tests/Occupant Restraint Controller (ORC) Verification Test.
No
2010 Jeep Truck Grand Cherokee SRT-8 V8-6.1L Page 163
- WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these
instructions may result in possible serious or fatal injury.
- WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these
instructions may result in possible serious or fatal injury.
- Replace the ORC.
- Perform the ORC VERIFICATION TEST. See: Verification Tests/Occupant Restraint Controller (ORC) Verification Test.
