Occupant Restraint Controller (ORC)
B2199-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD
Theory of Operation
The Occupant Restraint Controller (ORC) receives fused ignition voltage from the Totally Integrated Power Module (TIPM). The ORC is equipped with two voltage sources the F100 and F201 circuit. These circuits power the ORC and the capacitors used to initiate the squib deployment circuits in the event of collision detection.
- When Monitored:
The ORC continuously monitors the voltage on the F100 and F201 supply circuits.
- Set Condition:
The ORC will set this DTC when the voltage on both supply circuits are below 9 ± 0.5 volts for more than 15 seconds.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.
1. CHECK FOR CHARGING SYSTEM DTC
NOTE: Ensure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read Powertrain Control Module (PCM) DTCs.
Are there any Charging System DTCs set in the PCM?
Yes
- Testing and Inspection for Charging System diagnostic procedures.
No
- Go To 2
2. VERIFY ACTIVE DTC
1. With the scan tool, read all ORC DTCs.
Does the scan tool display active B2199-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD DTC?
Yes
- Go To 3
No
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Restraints System Intermittent Condition Test.
3. CHECK LOW VOLTAGE ON THE M44 AND M45 SUPPLY CIRCUITS
1. Remove the TIPM M44 and M45 fuse.
NOTE: Check connectors - Clean and repair as necessary.
2. Measure the voltage on the Ignition Run Control Output circuit between the TIPM M45 fuse supply terminal and ground.
3. Measure the voltage on the Ignition Run/Start Control Output circuit between the TIPM M44 fuse supply terminal and ground.
Is the voltage below 9 ± 0.5 volts on both circuits?
Yes
- Replace the TIPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Go To 4
4. CHECK FOR LOW VOLTAGE AT THE ORC
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. Install the TIPM M44 and M45 fuses.
2. Disconnect the ORC harness connectors.
NOTE: Check connectors - Clean and repair as necessary.
3. Connect the SRS Load Tool Adapter 8443-24 to the ORC C2 harness 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 on the (F100) Fused Ignition Run Control Output circuit between the SRS Load Tool Adapter 8443-24 to the ORC C2 connector cavity 24 and ground.
5. Measure the voltage on the (F201) Fused Ignition Run/Start Control Output circuit between the SRS Load Tool Adapter 8443-24 to the ORC C2 connector cavity 16 and ground.
Is the voltage below 9 ± 0.5 volts on both circuits?
Yes
- 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.
- Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Repair the F100 and F201 Fused Run and Run/Start Control Output circuits for high resistance.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- 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 RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.