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DTC 04 – Driver Firing Circuit, Short To Battery Voltage
Step
Visually inspect the supplemental inflatable
restraints (SIR) harness for damage.
1
Is there any visible damage to the SIR harness?
1. Replace the SIR wiring harness.
2
2. Reconnect the negative battery cable.
Is your repair complete?
1. Remove the driver airbag module.
2. Place the driver airbag module in a secure
position with the decorative surface facing
upward.
3. Disconnect the electrical connector at the SDM.
D The shorting bar at the disconnected SDM
connector will create a complete circuit be-
3
tween the wires from the driver airbag
module.
4. Use a multimeter to check the voltage at one of
the terminals on the wiring harness connector for
the driver airbag module.
D Refer to ''Diagnostic Illustration 6'' in this
section.
Is the voltage greater than the specified value?
1. Replace the SDM.
2. Reconnect the negative battery cable.
4
3. Set the scan tool for CODE ERASE.
4. Do the diagnostic system check.
Does the code 04 still show as a current fault?
1. Replace the driver airbag module.
5
2. Reconnect the negative battery cable.
Is the repair complete?
1. Disconnect the clock spring wiring harness at the
lower steering column.
D The shorting bar at the disconnected SDM
connector will create a complete circuit be-
tween the wires from the clock spring
connector.
6
2. Using a multimeter, check the voltage at one of
the terminals on the SDM side of the clock spring
connector.
D Refer to ''Diagnostic Illustration 7'' in this
section.
Did the voltmeter indicate the specified value?
1. Replace the clock spring.
7
2. Reconnect the negative battery cable.
Is the repair complete?
DAEWOO M-150 BL2
SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 21
Action
Value(s)
Yes
–
Go to Step 2
Go to
Diagnostic
–
System Check
0 v
Go to Step 6
–
Go to Step 5
Go to
Diagnostic
–
System Check
Go to Step 7
0 v
Go to
Diagnostic
–
System Check
No
Go to Step 3
–
Go to Step 4
System OK
–
Go to Step 2
–
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