IDENTIFICATION
For air bag system identification, see AIR BAG SYSTEM APPLICATION table.
Note. Diagnostic information is not available. To perform diagnosis, BMW MoDIC (hand-held scan tester) or BMW Service Tester (Sun 2013 Engine Analyzer) is necessary.
| Application | (1) SRS System | Number Of Air Bags | |
|---|---|---|---|
| All Models | |||
| 1988-91 | SRS 1 | 1 | |
| 1991-93 | SRS 2 | 1-2 | |
| 3-Series | |||
| 1993-95 | 5WK4 060 | 1 | |
| 1993-00 | BAE | 1-2 | |
| 1993-00 | ZAE | 1-2 | |
| 1995-00 | ZAE2 | 4-6 | |
| 1995-01 | MRS | 4-6 | |
| 1995-02 | MRS2 | 4-6 | |
| 1997-00 | MRS3 | 4-6 | |
| 2001-02 | MRS4 | 4-6 | |
| 5-Series | |||
| 1993-95 | 5WK4 060 | 1 | |
| 1993-01 | BAE | 1-2 | |
| 1993-01 | ZAE | 1-2 | |
| 1993-01 | ZAE2 | 4-6 | |
| 1995-01 | MRS | 4-6 | |
| 1995-01 | MRS2 | 4-6 | |
| 1997-02 | MRS3 | 4-6 | |
| 2001-02 | MRS4 | 4-6 | |
| 7-Series | |||
| 1993-95 | 5WK4 060 | 1 | |
| 1993-01 | BAE | 1-2 | |
| 1993-01 | ZAE | 1-2 | |
| 1993-01 | ZAE2 | 4-6 | |
| 1993-01 | MRS | 4-6 | |
| 1993-01 | MRS2 | 4-6 | |
| 1996-01 | MRS3 | 4-6 | |
| 2001 | MRS4 | 4-6 | |
| 8-Series | |||
| 1993-95 | 5WK4 060 | 1 | |
| 1993-98 | BAE | 1-2 | |
| 1993-98 | ZAE | 1-2 | |
| 1993-98 | ZAE2 | 4-6 | |
| 1993-98 | MRS | 4-6 | |
| 1993-98 | MRS2 | 4-6 | |
| X5 | |||
| 1999-02 | MRS3 | 4-6 | |
| 2001-02 | MRS4 | 4-6 | |
| Z3 | |||
| 1995-01 | BAE | 1-2 | |
| 1995-01 | MRS | 4-6 | |
| 1995-01 | MRS2 | 4-6 | |
| 1995-02 | MRS3 | 4-6 | |
| 1995-01 | ZAE2 | 4-6 | |
| 2001-02 | MRS4 | 4-6 | |
| Z8 | |||
| 2000-02 | MRS3 | 4-6 | |
| 2001-02 | MRS4 | 4-6 | |
| Mini | |||
| 2001-02 | MRS4 | 4-6 | |
| (1) Diagnostic information is not available. To perform diagnosis, BMW MoDIC (hand-held scan tester) or BMW Service Tester (Sun 2013 Engine Analyzer) is necessary. | |||
| (1) | Diagnostic information is not available. To perform diagnosis, BMW MoDIC (hand-held scan tester) or BMW Service Tester (Sun 2013 Engine Analyzer) is necessary. |
AIR BAG SYSTEM APPLICATION
SRS 1
| DTC | Definition | Procedure |
|---|---|---|
| 1 | Air Bag Ignition Capacitor Defect | Replace Ignition Capacitor, Air Bag System Will Not Function If This Is Not Corrected |
| 2 | Diagnostic Unit Malfunction | Examine All Faults & Delete Them From Fault Memory, If Fault Recurs, You Must Replace SRS Control Unit |
| 3 | Air Bag Supply Wire, Drivers Side | Resistance Too High, Check Wire Resistance, If Necessary Replace Cable Set |
| 4 | Air Bag Supply Wire, Driver Side, Power Supply Defect | Check Wire Resistance, If Necessary Replace Cable Set |
| 5 | Seat Belt Tensioner Supply Wire Resistance Too High | Check Wire Resistance, If Necessary Replace Cable Set |
| 6 | Seat Belt Tensioner Supply Wire, Power Supply Defect | Check Sensor Wire For Breaks Or Shorts, Check Connectors For Corrosion & Breakage |
| 7 | Crash Sensor Triggered, Front Left | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis |
| 8 | Crash Sensor Fault, Front Left | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis Replace Crash Sensor If Fault Recurs |
| 9 | Crash Sensor Ground Contact Fault, Front Left | Check Sensor Ground Contact, Check Battery Ground Contacts, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis, Replace Crash Sensor If Fault Recurs |
| 10 | Crash Sensor Triggered, Front Right | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis |
| 11 | Crash Sensor Fault, Front Right | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis, Replace Crash Sensor If Fault Recurs |
| 12 | Crash Sensor Ground Contact Fault, Front Right | Check Sensor Ground Contact, Check Battery Ground Contacts, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis, Replace Crash Sensor If Fault Recurs |
| 13 | Crash Sensor Supply Resistance Too High, Front Left | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis |
| 14 | Crash Sensor Supply Wire Fault, Front Left | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis |
| 15 | Crash Sensor Supply Resistance Too High, Front Right | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis |
| 16 | Crash Sensor Supply Wire Fault, Front Left | Check Sensor, Wires & Connections For Breaks, Shorts Or Defects, Delete Faults In Memory, Drive Vehicle Over 15 MPH, Then Rerun Diagnosis |
| 17 | Warning Lamp Short Circuit | Short Circuit Exists In Instrument Panel Or In Supply Wire From Control Unit To Instrument Panel, Check Whether SRS Warning Light Lights Up Permanently Or Not At All |
| 18 | Warning Lamp Defect | Check Air Bag Signal Bulb In Instrument Panel & Replace If Necessary |
| 19 | (1) Crash Detection Accumulator Activated | Detection Accumulator Is Activated By Operation Of SRS System |
| 20 | SRS Control Unit Defect, Dealer Replacement Only | Delete Fault Stored In Memory, Operate Vehicle For 5 Minutes, If Fault Re-Occurs, SRS Control Unit Will Need Replacement |
| 21 | Air Bag Supply Wire Resistance Too High, Passenger Side | Check Wire Resistance, If Necessary Replace Cable Set |
| 22 | Air Bag Supply Wire, Driver Side Wire Defect | Check Wire Resistance, If Necessary Replace Cable Set |
| (1) This accumulator can only be diagnosed and reset by a BMW dealer. | ||
| (1) | This accumulator can only be diagnosed and reset by a BMW dealer. |
DIAGNOSTIC TROUBLE CODES (SRS 1)
SRS 2
| DTC | Definition | Procedure |
|---|---|---|
| 1 | Front Sensor Trigger, One Time | — |
| 2 | Front Sensor Trigger, Multiple Times | — |
| 5 | Front Sensor Trigger, Permanent | — |
| 13 | Two Firing Circuits Are Shorted | — |
| 19 | Front Sensor Supply Voltage, Left Fault | — |
| 20 | Front Sensor Supply Voltage, Right Fault | — |
| 27 | Primary Air Bag Firing Circuit Is Shorted To Battery Positive | Check Wiring For Short |
| 33 | Primary Air Bag Firing Circuit Is Shorted To Ground | Check Wiring For Shorts Or Breaks |
| 42 | Air Bag Ignition Circuit, Drivers Side | Resistance To Low |
| 43 | Seat belt Pretension System, Passenger Air Bag | Resistance In Circuit II Is Too Low |
| 44 | Passenger Air Bag | Resistance In Circuit III (Or Spare Resistor) Is To Low |
| 45 | Air Bag Ignition Circuit, Drivers Side | Resistance In Supply Wire Is Too High |
| 46 | Seat belt Pretension System, Passenger Air Bag | Resistance In Circuit II Is Too High |
| 47 | Passenger Air Bag | Resistance In Circuit III (For Spare Resistance) Is Too High |
| 49 | SRS Warning Lamp faulty | — |
| 50 | (1) SRS Control Unit Defect | Delete Fault Stored In Memory, Operate Vehicle For 5 Minutes, If Fault Re-Occurs SRS Control Unit Will Need Replacement |
| 52 | (1) Crash Accumulator Triggered | — |
| (1) Dealer replacement only. | ||
| (1) | Dealer replacement only. |
DIAGNOSTIC TROUBLE CODES (SRS 2)
MRS
| DTC | Probable Fault |
|---|---|
| 1 | ECU Internal Fault |
| 2 | Warning Lamp Faulty |
| 3 | ECU Power Supply |
| 4 | Firing Circuit Driver Air Bag |
| 5 | Firing Circuit DP |
| 6 | Firing Circuit PP |
| 7 | Firing Circuit Passenger Air Bag |
| 8 | Firing Circuit Left Side Air Bag |
| 9 | Firing Circuit Right Side Air Bag |
| 16 | Driver Seat Belt Switch |
| 17 | Passenger Seat Belt Switch |
| 18 | Left Satellite Sensor (Side Bag) |
| 19 | Left Satellite Sensor (Side Bag) |
| 20 | Left Satellite Sensor (Side Bag) |
| 21 | Right Satellite Sensor (Side Bag) |
| 22 | Right Satellite Sensor (Side Bag) |
| 23 | Right Satellite Sensor (Side Bag) |
| 24 | Passenger Seat, Occupancy Sensor |
| 25 | Passenger Seat, Occupancy Sensor |
| 26 | Passenger Seat, Occupancy Sensor |
| 27 | Seat Occupancy Recognition |
| 29 | Seat Occupancy Recognition |
| 31 | Seat Occupancy Recognition |
| 32 | Left Satellite Sensor (Side Bag) |
| 33 | Right Satellite Sensor (Side Bag) |
DIAGNOSTIC TROUBLE CODES (MRS)
MRS2
| DTC | Probable Cause |
|---|---|
| 1 | ECU Internal Fault |
| 2 | Warning Lamp Faulty |
| 3 | ECU Power Supply |
| 4 | Driver Air Bag |
| 5 | Driver Pretensioner |
| 6 | Passenger Pretensioner |
| 7 | Passenger Air Bag |
| 8 | Side Air Bag Front Left |
| 9 | Side Air Bag Front Right |
| 10 | Side Air Bag Rear Left |
| 11 | Side Air Bag Rear Right |
| 12 | Head Air Bag Left |
| 13 | Head Air Bag Right |
| 14 | Battery Disconnection |
| 15 | Passenger Air Bag Stage |
| 16 | Driver Seat Belt Lock |
| 17 | Passenger Seat Belt Lock |
| 18 | Sensor Left Side Air Bag |
| 19 | Sensor Left Side Air Bag |
| 21 | Sensor Right Side Air Bag |
| 22 | Sensor Right Side Air Bag |
| 23 | Sensor Right Side Air Bag |
| 24 | Passenger Seat Occupancy Recognition |
| 26 | Passenger Seat Occupancy Recognition |
| 27 | Seat Occupancy Recognition |
| 28 | Seat Occupancy Recognition |
| 29 | Seat Occupancy Recognition |
| 31 | Seat Occupancy Recognition |
| 32 | Sensor Left Side Air Bag |
| 33 | Sensor Right Side Air Bag |
| 53 | Sensor Left Side Air Bag |
| 54 | Sensor Right Side Air Bag |
DIAGNOSTIC TROUBLE CODES (MRS2)
MRS3
| DTC | Probable Cause |
|---|---|
| 1 | Driver Air Bag |
| 2 | Driver Pretensioner |
| 3 | Passenger Pretensioner |
| 4 | Passenger Air Bag |
| 5 | Side Air Bag Front Left |
| 6 | Side Air Bag Front Right |
| 7 | Side Air Bag Rear Left |
| 8 | Side Air Bag Rear Right |
| 9 | Head Air Bag Front Left |
| 10 | Head Air Bag Front Right |
| 11 | Battery Disconnection |
| 12 | Passenger Air Bag Stage |
| 13 | Driver Air Bag Stage |
| 14 | Head Air Bag Rear Left |
| 15 | Head Air Bag Rear Right |
| 16 | Battery Disconnection |
| 17 | ECU Power Supply |
| 18 | Air Bag Warning Light |
| 19 | Attention Warning Light (HWL) |
| 20 | Driver Seat Belt Lock |
| 21 | Passenger Seat Belt Lock |
| 22 | Side Air Bag Sensor Left |
| 23 | Side Air Bag Sensor Right |
| 24 | External Roll Sensor |
| 25 | Seat Occupied Recognition 2 (SBE 2) |
| 26 | Seat Occupied Recognition 1 (SBE 1) |
| 27 | Crash Message Memory |
| 28 | Connector Ignition Circuit Driver Air Bag |
| 29 | Connector Ignition Circuit Driver Pre Tensioner |
| 30 | Connector Ignition Circuit Passenger Pre-Tensioner |
| 31 | Connector Ignition Circuit Passenger Air Bag |
| 32 | Connector Ignition Circuit Side Air Bag FL |
| 33 | Connector Ignition Circuit Side Air Bag FR |
| 34 | Connector Ignition Circuit Side Air Bag RL |
| 35 | Connector Ignition Circuit Side Air Bag RR |
| 36 | Connector Ignition Circuit Head Air Bag FL |
| 37 | Connector Ignition Circuit Head Air Bag FR |
| 38 | Connector Ignition Circuit Battery Disconnect 1 |
| 39 | Connector Ignition Circuit PA Stage 2 |
| 40 | Connector Ignition Circuit DA Stage 2 |
| 41 | Connector Ignition Circuit Head Air Bag RL |
| 42 | Connector Ignition Circuit Head Air Bag RR |
| 43 | Connector Ignition Circuit Battery Disconnect 2 |
| 44 | Checksum Coding Data |
| 45 | Side Air Bag Sensor Front |
| 240 | ECU Internal Fault |
DIAGNOSTIC TROUBLE CODES (MRS3)
BAE & ZAE
| DTC | Probable Cause |
|---|---|
| 1 | ECU Internal Fault |
| 2 | Firing Circuit Driver Air Bag |
| 3 | Firing Circuit DP |
| 4 | Firing Circuit PP |
| 5 | Firing Circuit Passenger Air Bag |
| 17 | ECU Power Supply |
| 19 | Warning Lamp Faulty |
| 20 | Passenger Seat, Occupancy Sensor |
| 21 | Driver Pressure Sensor |
| 22 | Passenger Pressure Sensor |
| 24 | Driver Seat Belt Lock |
| 25 | Passenger Seat Belt Lock |
| 73 | Short Between Firing Circuits |
DIAGNOSTIC TROUBLE CODES (BAE & ZAE)
ZAE2
| DTC | Probable Cause |
|---|---|
| 1 | ECU Internal Fault |
| 2 | Warning Lamp Faulty |
| 3 | ECU Power Supply |
| 4 | Firing Circuit Driver Air Bag |
| 5 | Firing Circuit DP |
| 6 | Firing Circuit PP |
| 7 | Firing Circuit Passenger Air Bag |
| 16 | Driver Seat Belt Switch |
| 17 | Passenger Seat Belt Switch |
| 24 | Passenger Seat, Occupancy Sensor |
| 25 | Passenger Seat, Occupancy Sensor |
| 26 | Passenger Seat, Occupancy Sensor |
| 27 | Seat Occupancy Recognition |
| 29 | Seat Occupancy Recognition |
| 31 | Seat Occupancy Recognition |
DIAGNOSTIC TROUBLE CODES (ZAE2)
5WK4 060
| DTC | Probable Cause |
|---|---|
| 1 | Crash Sensor Closed Once |
| 2 | Crash Sensor Closed Several Times |
| 5 | Crash Sensor Permanently Closed |
| 13 | Two Firing Circuits Shorted |
| 19 | Crash Sensor Left Supply, Open Circuit |
| 20 | Crash Sensor Right Supply, Open Circuit |
| 27 | One Firing Circuit Short To Voltage |
| 33 | One Firing Circuit Short To Ground |
| 42 | Driver Air Bag Resistance Too Low |
| 43 | Resistance Too Low Firing Circuit II |
| 44 | Resistance Too Low Firing Circuit III |
| 45 | Driver Air Bag Resist, Too High |
| 46 | Resistance Too High Firing Circuit II |
| 47 | Resistance Too High Firing Circuit III |
| 49 | Warning Lamp Faulty |
| 50 | ECU Internal Fault |
| 52 | Crash Evidence Set |
| 102 | Ignore This Error |
DIAGNOSTIC TROUBLE CODES (5WK4 060)
MRS4
| DTC | Probable Cause |
|---|---|
| 1 | Driver Air Bag Stage |
| 2 | Driver Pretensioner |
| 3 | Passenger Pretensioner |
| 4 | Passenger Air Bag Stage 1 |
| 5 | Side Air Bag Front Left |
| 6 | Side Air Bag Front Right |
| 7 | Side Air Bag Rear Left |
| 8 | Side Air Bag Rear Right |
| 9 | Head Air Bag Front Left |
| 10 | Head Air Bag Front Right |
| 11 | Battery Disconnection 1 |
| 12 | Passenger Air Bag Stage 2 |
| 13 | Driver Air Bag Stage 2 |
| 14 | Head Air Bag Rear Left |
| 15 | Head Air Bag Rear Right |
| 16 | Battery Disconnection 2 |
| 17 | Pretensioner Rear Left |
| 18 | Pretensioner Rear Right |
| 19 | Pretensioner Rear Middle |
| 20 | Ignition Circuit ZK19 |
| 21 | Driver Air Bag Stage 2 |
| 22 | Ignition Circuit ZK7 |
| 48 | Connector Ignition Circuit DA Stage 1 |
| 49 | Connector Ignition Circuit D Pretensioner |
| 50 | Connector Ignition Circuit P Pretensioner |
| 51 | Connector Ignition Circuit PA Stage 2 |
| 52 | Connector Ignition Circuit Side Air Bag FL |
| 53 | Connector Ignition Circuit Side Air Bag FR |
| 54 | Connector Ignition Circuit Side Air Bag RL |
| 55 | Connector Ignition Circuit Side Air Bag RR |
| 56 | Connector Ignition Circuit Head Air Bag FL |
| 57 | Connector Ignition Circuit Head Air Bag FR |
| 58 | Connector Ignition Circuit Battery Disconnect 1 |
| 59 | Connector Ignition Circuit PA Stage 2 |
| 60 | Connector Ignition Circuit DA Stage 2 |
| 61 | Connector Ignition Circuit Head Air Bag RL |
| 62 | Connector Ignition Circuit Head Air Bag RR |
| 63 | Connector Ignition Circuit Battery Disconnect On |
| 64 | Connector Ignition Circuit Pretensioner RL |
| 65 | Connector Ignition Circuit Pretensioner RR |
| 66 | Connector Ignition Circuit Pretensioner RM |
| 67 | Connector Ignition Circuit ZK19 |
| 68 | Connector Ignition Circuit DA Stage 2 |
| 69 | Connector Ignition Circuit ZK7 |
| 80 | Supply Voltage (B+) |
| 81 | Fault Indicator Light |
| 82 | Attention Warning Light (HWL) |
| 96 | Driver Seat Belt Lock |
| 98 | Seat Belt Lock Rear Left |
| 99 | Seat Belt Lock Rear Right |
| 100 | Seat Belt Lock Rear Middle |
| 112 | Seat Occupancy Recognition |
| 113 | Seat Occupied Recognition 2 (SBE 2) |
| 117 | External Roll Sensor |
| 128 | Sensor Front Side Air Bags |
| 129 | Sensor Left Side Air Bag |
| 130 | Sensor Left Side Air Bag |
| 131 | Sensor Left Side Air Bag |
| 132 | Sensor Right Side Air Bag |
| 133 | Sensor Right Side Air Bag |
| 134 | Sensor Right Side Air Bag |
| 144 | Coding Error |
| 145 | Crash Message Memory |
| 240 | Internal ECU Fault |
DIAGNOSTIC TROUBLE CODES (MR54)