2006 MERCEDES-BENZ SPRINTER airbag off

Symptom:
AIRBAG WARNING INDICATOR - DRIVER LOW
When Monitored and Set Condition:
AIRBAG WARNING INDICATOR - DRIVER LOW
When Monitored: With ignition on the ACM monitors the Airbag Warning Indicator
Driver circuit for an open, high resistance, or short to ground.
Set Condition: This DTC will set if the ACM detects a short to ground or open Airbag
Warning Indicator Driver circuit.
POSSIBLE CAUSES
CLUSTER SRS INDICATOR OPEN
ACM, AIRBAG WARNING LAMP DRIVER CIRCUIT OPEN
OPEN AIRBAG WARNING INDICATOR DRIVER
ACM, WARNING INDICATOR CIRCUIT LOW
AIRBAG WARNING INDICATOR DRIVER SHORT TO GROUND
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:All
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 8
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
19
AIRBAG

TEST ACTION APPLICABILITY
2WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
Disconnect the Airbag Control Module connector.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
NOTE: Check connectors - Clean and repair as necessary.
Connect the Airbag Load Tool ACM Adaptor to the Airbag Control Module connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
ON, THEN RECONNECT THE BATTERY.
Measure the voltage of the Airbag Warning Indicator Driver circuit at the ACM
adaptor.
Is the voltage above 9.0 volts?All
Ye s!Go To 3
No!Go To 5
3 Turn the ignition off.
Connect a jumper between the Airbag Warning Indicator Driver circuit at the ACM
Adaptor and ground.
Turn the ignition on.
Observe the SRS indicator while turning the ignition on.
Does the SRS indicator illuminate?All
Ye s!Go To 4
No!Replace the Instrument Cluster in accordance with Service In-
structions.
Perform AIRBAG VERIFICATION TEST - VER 1.
4WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.All
Repair:
Replace the Airbag Control Module in accordance with Service
Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Disconnect the Instrument Cluster connectors.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the Airbag Warning Lamp Driver circuit between the ACM
Adaptor and Instrument Cluster Connector.
Is the resistance below 5.0 ohms?All
Ye s!Go To 6
No!Repair the open or high resistance in the Airbag Warning Indica-
tor Driver circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
20
AIRBAG
AIRBAG WARNING INDICATOR - DRIVER LOW ÐContinued

TEST ACTION APPLICABILITY
6 Measure the resistance of the Airbag Warning Lamp Driver circuit between the
Airbag Control Module Adaptor and ground.
Is the resistance below 5.0 ohms?All
Ye s!Repair the Airbag Warning Indicator Driver circuit shorted to
ground.
Perform AIRBAG VERIFICATION TEST - VER 1.
No!Go To 7
7WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.All
Repair:
Replace the Airbag Control Module in accordance with the Service
Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
8 With the DRBIIIt, 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 IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE 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 IGNI-
TION ON, THEN RECONNECT THE BATTERY.
With the DRBIIItmonitor 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 circuits, rotate the steering wheel from stop to stop.
You have just attempted to simulate the condition that initially set the trouble code
message.
Did the DTC become active?All
Ye s!Select appropriate symptom from Symptom List.
No!No problem found at this time. Erase all codes before returning
vehicle to customer.
21
AIRBAG
AIRBAG WARNING INDICATOR - DRIVER LOW ÐContinued

STORED ENERGY FIRING 2
When Monitored: With the ignition on, the module on board diagnostics continuously
performs internal voltage tests.
Set Condition: This DTC will set if the ACM identifies an internal low voltages condition.
POSSIBLE CAUSES
AIRBAG CONTROL MODULE - ACM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, IF THE MODULE IS
DROPPED AT ANY TIME, IT MUST BE REPLACED.
Select the appropriate module and DTC type combination:All
ACM - ACTIVE DTC
Replace the Airbag Control Module in accordance with Service
Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
ACM - STORED DTC
Replace the Airbag Control Module in accordance with Service
Instructions.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
23
AIRBAG
DRIVER SEAT BELT TENSIONER - INCORRECT FEEDBACK ÐContinued

Symptom:
DRIVER SEAT BELT TENSIONER CIRCUIT OPEN
When Monitored and Set Condition:
DRIVER SEAT BELT TENSIONER CIRCUIT OPEN
When Monitored: With the ignition on the ACM monitors the resistance of the Driver
Seat Belt Tensioner circuits.
Set Condition: The ACM has detected an open circuit or high resistance on the Driver
Seat Belt Tensioner circuits.
POSSIBLE CAUSES
DRIVER SEAT BELT TENSIONER CIRCUITS OPEN
DRIVER SEAT BELT TENSIONER LINE 1 OR LINE 2 CIRCUIT OPEN
ACM, DRIVER SEAT BELT TENSIONER CIRCUIT OPEN
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:All
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2NOTE: Ensure the battery is fully charged.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
Disconnect the Driver Seat Belt Tensioner connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Driver Seat Belt Tensioner connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read active Airbag Control Module DTC's.
Does the DRBIIItdisplay DRIVER SBT CIRCUIT OPEN?All
Ye s!Go To 3
No!Replace Driver Seat Belt Tensioner in accordance with the Service
Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
24
AIRBAG

TEST ACTION APPLICABILITY
3WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
Disconnect the Load Tool from the Driver Seat Belt Tensioner connector.
Disconnect the Airbag Control Module Connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ACM Adaptor to the Airbag Control Module
connector(s).
Measure the resistance of the Driver SBT Line 1 and Line 2 circuits between the
Load Tool Adapter and the Driver SBT connector.
Is the resistance below 1.0 ohms on both circuit?All
Ye s!Go To 4
No!Repair open or high resistance in Driver Seat Belt Tensioner Line
1 Line 2 circuits.
Perform AIRBAG VERIFICATION TEST - VER 1.
4WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.All
Repair:
Replace the Airbag Control Module in accordance with the Service
information.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 With the DRBIIIt, 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 IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE 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 IGNI-
TION ON, THEN RECONNECT THE BATTERY.
With the DRBIIItmonitor 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 circuits, rotate the steering wheel from stop to stop.
You have just attempted to simulate the condition that initially set the trouble code
message.
Did the DTC become active?All
Ye s!Select appropriate symptom from Symptom List.
No!No problem found at this time. Erase all codes before returning
vehicle to customer.
25
AIRBAG
DRIVER SEAT BELT TENSIONER CIRCUIT OPEN ÐContinued

Symptom:
DRIVER SEAT BELT TENSIONER CIRCUIT SHORT
When Monitored and Set Condition:
DRIVER SEAT BELT TENSIONER CIRCUIT SHORT
When Monitored: With the ignition on the ACM monitors the resistance of the Driver
Seat Belt Tensioner circuits
Set Condition: The ACM has detected low resistance in the Driver Seat Belt Tensioner
circuits.
POSSIBLE CAUSES
DRIVER SEAT BELT TENSIONER SHORT
DRIVER SEAT BELT TENSIONER LINE 1 SHORT TO LINE 2
ACM, DRIVER SEAT BELT TENSIONER CIRCUIT SHORT
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
NOTE: Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:All
ACM - ACTIVE DTC
Go To 2
ACM - STORED DTC
Go To 5
NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.
2WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
Disconnect the Driver Seat Belt Tensioner connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool to the Driver Seat Belt Tensioner connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
ON, THEN RECONNECT THE BATTERY.
With the DRBIIIt, read active Airbag Control Module DTC's.
Does the DRBIIItdisplay DRIVER SEAT BELT TENSIONER CIRCUIT SHORT?All
Ye s!Go To 3
No!Replace Driver Seat Belt Tensioner in accordance with the Service
Information.
Perform AIRBAG VERIFICATION TEST - VER 1.
26
AIRBAG

TEST ACTION APPLICABILITY
3WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
Disconnect the Load Tool from the Driver Seat Belt Tensioner connector.
Disconnect the Airbag Control Module connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ACM Adaptor to the Airbag Control Module
connector(s).
Measure the resistance between the Driver SBT Line 1 and Line 2 circuit at the
Driver SBT connector.
Is the resistance below 10K Ohms?All
Ye s!Repair Driver Seat Belt Tensioner Line 1 circuit short to Driver
Seat Belt Tensioner Line 2 circuit.
Perform AIRBAG VERIFICATION TEST - VER 1.
No!Go To 4
4WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.All
Repair:
Replace the Airbag Control Module in accordance with the Service
Information. WARNING: IF THE AIRBAG CONTROL MODULE
IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
Perform AIRBAG VERIFICATION TEST - VER 1.
5 With the DRBIIIt, 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 IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE 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 IGNI-
TION ON, THEN RECONNECT THE BATTERY.
With the DRBIIItmonitor 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 circuits, rotate the steering wheel from stop to stop.
You have just attempted to simulate the condition that initially set the trouble code
message.
Did the DTC become active?All
Ye s!Select appropriate symptom from Symptom List.
No!No problem found at this time. Erase all codes before returning
vehicle to customer.
27
AIRBAG
DRIVER SEAT BELT TENSIONER CIRCUIT SHORT ÐContinued