Short-Circuit To Ground
Short-circuit to ground
Checking diagnostic trouble code (DTC) and type of fault
Hint: Before starting to remove components, the Volvo Scan Tool (ST) should be used to check whether the fault is permanent or intermittent.
Clear diagnostic trouble code (DTC).
Continue - Checking diagnostic trouble code (DTC) and type of fault, continuation
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Checking diagnostic trouble code (DTC) and type of fault, continuation
- Wait at least 10 seconds.
Read off diagnostic trouble code (DTC).
It should not be possible to clear diagnostic trouble code (DTC) SRS-213 if the fault is permanent.
Can the DTC be erased?
Yes - Diagnostic trouble code (DTC) SRS 213 could be cleared
No - Removing steering wheel module
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Diagnostic trouble code (DTC) SRS 213 could be cleared
The fault is not permanent. The fault could be intermittent. Attempt to provoke the intermittent fault at every step of the fault tracing process by shaking connectors and cabling and turning the steering wheel while taking readings.
Continue - Removing steering wheel module
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Removing steering wheel module
Removing steering wheel module
Removing steering wheel module
- Make a note of radio code if anti-theft coded radio installed.
- Ignition off.
- Disconnect battery negative lead.
- Remove steering wheel module in accordance with Steering wheel module, steering wheel and contact reel, replacement Airbag Steering Wheel Module, Steering Wheel and Contact Reel Replacement.
Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed steering wheel module. This could deploy the airbag.
Caution! Put the steering wheel module with its metal side (back) down in a protected place (in the cargo compartment for example).
Continue - CONTINUE
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Continue - Checking DTCs with the steering wheel module replaced by special tool 998 8695
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Checking DTCs with the steering wheel module replaced by special tool 998 8695
- Connect special tool 998 8695 TEST DEVICE 998 8695 Test Device to SRS ignition cable igniter connector.
Caution! The special tool should be checked and faultless. If the tool is defective it will cause errors in the diagnosis and make fault tracing harder.
- Ignition on.
- Connect battery negative lead.
Clear diagnostic trouble code (DTC).
Continue - Checking DTCs with the steering wheel module replaced by special tool 998 8695, continuation
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Checking DTCs with the steering wheel module replaced by special tool 998 8695, continuation
- Ignition on.
- Wait at least 10 seconds.
Read off diagnostic trouble code (DTC).
It should be possible to clear diagnostic trouble code (DTC) SRS-213 if the fault is in the steering wheel module.
Can the DTC be erased?
Yes - Installing steering wheel module
No - Removing steering wheel covers
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Installing steering wheel module
Installing steering wheel module
Installing steering wheel module
- Ignition off.
- Disconnect battery negative lead.
- Remove the special tool 998 8695 TEST DEVICE 998 8695 Test Device.
- Connect connector to steering wheel module.
- Install steering wheel module as per Steering wheel module, steering wheel and contact reel, replacement Airbag Steering Wheel Module, Steering Wheel and Contact Reel Replacement.
Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed steering wheel module. This could deploy the airbag.
Continue - CONTINUE
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CONTINUE - Checking diagnostic trouble code (DTC) with the steering wheel module installed
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Checking diagnostic trouble code (DTC) with the steering wheel module installed
- Ignition on.
- Connect battery negative lead.
- Wait at least 10 seconds.
Read off diagnostic trouble code (DTC).
If the fault is in the steering wheel module diagnostic trouble code (DTC) SRS-213 should be stored.
Is the diagnostic trouble code (DTC) displayed?
Yes - Replacing component
No - Removing steering wheel module
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Replacing component
The short-circuit is in the steering wheel module.
- Replace steering wheel module in accordance with Steering wheel module, steering wheel and contact reel, replacement Airbag Steering Wheel Module, Steering Wheel and Contact Reel Replacement.
Select continue when the defect has been remedied.
Continue - FAULT FOUND
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Removing steering wheel module
Removing steering wheel module
Removing steering wheel module
- Ignition off.
- Disconnect battery negative lead.
- Remove steering wheel module as per Steering wheel module, steering wheel and contact reel, replacement Airbag Steering Wheel Module, Steering Wheel and Contact Reel Replacement.
Warning! Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed steering wheel module. This could deploy the airbag.
Caution! Put the steering wheel module with its metal side (back) down in a protected place (in the cargo compartment for example).
Continue - CONTINUE
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CONTINUE - Removing steering wheel covers
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Removing steering wheel covers
Removing steering wheel covers
Removing steering wheel covers
- Ignition off.
- Disconnect battery negative lead.
Remove
- Screws in countersunk outer holes (2 x Torx 15) from beneath cover.
- Screws in inner holes (2 x Torx 25) from beneath cover.
- Ignition key.
- Upper and lower cover from the steering column.
Continue - CONTINUE
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CONTINUE - Checking to see if the contact reel is short circuited to ground
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Checking to see if the contact reel is short circuited to ground
- Ignition off.
- Disconnect contact reel connector.
Connect an ohmmeter between a good ground terminal and the connection pins in the contact reel half of the connector (part A in the figure).
Caution! Take care not to damage connector pins.
- Connect one ohmmeter test terminal to ground.
- Take an ohmmeter reading with the other test terminal against the male connector half terminal 1.
- Then take an ohmmeter reading against male connector half terminal 2.
The ohmmeter should read infinite resistance.
- Even if the ohmmeter reading is OK there may be an intermittent fault in the contact reel.
Repeat resistance measurements while slowly turning the steering wheel to full lock in both directions.
The ohmmeter should show infinite resistance in all steering wheel positions.
Is the value OK?
OK - Check to see if there is a short circuit to ground in the SRS ignition cable to the sensor module
Not OK - Replacing component
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Replacing component
If the ohmmeter reads approx. 0 ohms there is a short-circuit to ground in the contact reel.
- Replace contact reel in accordance with Steering wheel module, steering wheel and contact reel, replacement Airbag Steering Wheel Module, Steering Wheel and Contact Reel Replacement.
Continue - FAULT FOUND
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Check to see if there is a short circuit to ground in the SRS ignition cable to the sensor module
- Ignition off.
Connect an ohmmeter between a good ground terminal and connecting sockets on the sensor module half of the connector.
Caution! Take care not to damage connecting sockets.
- Connect one ohmmeter test terminal to ground.
- Take an ohmmeter reading with the other test terminal against the female connector half terminal 1.
- Then take an ohmmeter reading against female connector half terminal 2.
- The ohmmeter should show 72 kohms at the first reading. At the second reading, approx. 25 kohms with FLUKE or 16 kohms with VIDA.
Are these values OK?
OK - Replacing component
Not OK - Checking to see if the SRS ignition cabling is short-circuited to ground
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Replacing component
SRS ignition cable and sensor module OK.
- Replace contact reel in accordance with Steering wheel module, steering wheel and contact reel, replacement Airbag Steering Wheel Module, Steering Wheel and Contact Reel Replacement.
Continue - FAULT FOUND
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Checking to see if the SRS ignition cabling is short-circuited to ground
- Ignition off.
- Expose and remove the SRS sensor module connector according to: Replacing the SRS sensor module Service and Repair
Caution! Never touch the sensor module pins. There is a risk of static discharge which could damage the sensor module.
Connect an ohmmeter between a good ground terminal and the connection sockets in the SRS sensor module half of the SRS ignition cable contact reel connector (part B in the figure).
Caution! Take care not to damage connecting sockets.
- Connect one ohmmeter test terminal to ground.
- Take an ohmmeter reading with the other test terminal against the female connector half terminal 1. The ohmmeter should read infinite resistance.
- Then take an ohmmeter reading against female connector half terminal 2. The ohmmeter should read infinite resistance.
Are these values OK?
OK - Replacing component
Not OK - Replacing component
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Replacing component
The SRS ignition cabling is OK.
- Replace the sensor unit according to: Replacing the SRS sensor module Service and Repair
Continue - FAULT FOUND
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Replacing component
If the ohmmeter reads approx. 0 ohms for terminals 1 or 2 there is a short-circuit to ground in the SRS ignition cable between the connector and sensor module.
- Replace SRS cable harness.
Continue - FAULT FOUND
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