Passenger Airbag On-Off Switch Open
PASSENGER AIRBAG ON-OFF SWITCH OPENPassenger Airbag On-Off Switch Open:
WHEN MONITORED
When the ignition is on, the (R106) Passenger Airbag MUX Switch Sense circuit supplies a 3 to 10 ms pulse every 100 ms across the On or Off switch resistor to the (R104) Passenger Airbag MUX Switch Return circuit.
SET CONDITION
The code will set if the Occupant Restraint Controller (ORC) senses an open or high resistance on the (R106) Passenger Airbag MUX Switch Sense circuit or (R104) Passenger Airbag MUX Switch Return circuit.
POSSIBLE CAUSES
- PAB on - off switch disconnected
- ORC improperly configured for PAB on - off switch
- (R106) PAB mux switch sense circuit open
- (R104) PAB mux switch return circuit open
- PAB on - off switch open
- ORC, PAB on - off switch circuit open
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTC
Turn the ignition on.
NOTE:
- Ensure that the battery is fully charged.
- For the purpose of this test, the AECM and ACM modules will be referred to as an ORC.
- When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.
SELECT ACTIVE or STORED DTC:
ORC - ACTIVE DTC
Go To 2
ORC - STORED DTC
Go To 8
2. CHECKING EQUIPMENT
Q: Is this vehicle equipped with a Passenger Airbag On - Off Switch?
YES: Go To 3
NO: With the Scan Tool in MISCELLANEOUS re-configure the ORC for NO AIRBAG ON/OFF SWITCH. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
3. SWITCH DISCONNECTED
Turn the ignition off.
Gain access to the Passenger Airbag On - Off Switch connector.
Q: Is the Passenger Airbag On - Off Switch connected to the dash harness?
YES: Go To 4
NO: Connect the Passenger Airbag On - Off switch to the dash harness connector. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
4. PAB ON - OFF SWITCH OPEN
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Passenger Airbag On - Off Switch.
NOTE: Check connectors - Clean and repair as necessary.
Measure the PAB On - Off Switch resistance between terminals 1 and 2 in both switch positions.
The switch resistance specifications are: ON position = 175.0 to 190.0 ohms and OFF position = 820.0 to 870.0 ohms.
Q: Is the resistance within the range specified for both switch positions?
YES: Go To 5
NO: Replace the Passenger Airbag ON - OFF Switch. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
5. (R106) PAB MUX SWITCH SENSE CIRCUIT OPEN
Disconnect the Occupant Restraint Controller C1 connector. NOTE: Check connectors - Clean and repair as necessary.
WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER 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.
Connect the appropriate Load Tool Adaptor to the Occupant Restraint Controller connector.
Measure the resistance of the (R106) Passenger Airbag MUX Switch Sense circuit between the ORC Adaptor and the PAB On - Off Switch connector.
Q: Is the resistance below 5.0 ohms?
YES: Go To 6
NO: Repair the (R106) Passenger Airbag MUX Switch Sense circuit for an open. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
6. (R104) PAB MUX SWITCH RETURN CIRCUIT OPEN
Measure the resistance of the (R104) Passenger Airbag MUX Switch Return circuit between the ORC Adaptor and the PAB On - Off Switch connector.
Q: Is the resistance below 5.0 ohms?
YES: Go To 7
NO: Repair the (R104) Passenger Airbag MUX Switch Return circuit for an open. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
7. ORC, PAB ON - OFF SWITCH CIRCUIT OPEN
WARNING: IF THE OCCUPANT RESTRAINT CONTROLLER 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 (ORC). Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
8. CHECKING STORED OR INTERMITTENT CODES
With the Scan Tool, record and erase all DTC's from all Airbag modules.
If equipped with Passenger Airbag On - Off switch, read the DTC's in all switch positions.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chaffed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the Scan Tool, monitor active codes as you work through the following steps.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE DISTANCE FROM ALL AIRBAGS WHILE PERFORMING THE FOLLOWING STEPS.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
If only stored codes return continue the test until the problem area has been isolated.
In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
Q: Are any ACTIVE DTCs present?
YES: Select the appropriate diagnostic procedure.
NO: No problem found at this time. Erase all codes before returning vehicle to customer.