Honda HR-V: DTC B0021-1A
Special Tools Required
SRS Short Canceller 070AZ-SAA0100
NOTE:
- Before doing this troubleshooting procedure, find out if the vehicle was
in a collision. If so, verify
that all the required components were replaced with new components of the
correct part number,
and that they were properly installed.
- Before doing this troubleshooting procedure, review SRS Precautions and
Procedures, General
Troubleshooting Information, and 12 Volt Battery Terminal Disconnection and
Reconnection.
- Before replacing the SRS unit, check the SRS unit software version with
the HDS. If the software version
is not the latest, update the SRS unit software, and retest.
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DTC (SRS)
1. Problem verification:
- Clear the DTCs with the HDS.
Clear DTCs
- Turn the vehicle to the ON mode, then wait for 10 seconds.
- Check for DTCs with the HDS.
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Is DTC B0021-1A indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Go to Troubleshooting
Intermittent Failures. If
another DTC is indicated, troubleshoot the DTC.
2. Left side curtain airbag inflator check:
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the negative cable from the 12 volt battery, then wait at
least 3 minutes.
- Remove the headliner.
- Disconnect the following connector.
Left side curtain airbag inflator 2P connector (on the floor wire harness)
- Reconnect the negative cable to the 12 volt battery.
- Clear the DTCs with the HDS.
Clear DTCs
- Turn the vehicle to the ON mode, then wait for 10 seconds.
- Check for DTCs with the HDS.
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Is DTC B0021-1A indicated?
YES
Go to step 3.
NO
Faulty left side curtain airbag inflator; replace the left side curtain
airbag, then clear the DTC.
3. Shorted wire check (LCA+ line to LCA- line):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the negative cable from the 12 volt battery, then wait at
least 3 minutes.
- Disconnect the following connector.
SRS unit connector B (39P)
- Connect the SRS short canceller to SRS unit connector B (39P) terminals
No. 1 and No. 2.
- Measure the resistance between test points 1 and 2.
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Is there an open circuit?
YES
The LCA+ and LCA- wires are OK. Replace the SRS unit.
NO
Short to another wire in the floor wire harness; replace the floor wire
harness, then clear the DTC.
READ NEXT:
Special Tools Required
SRS Inflator Simulator 07SAZ-TB4011A
SRS Simulator Lead L 070AZ-SNAA300
NOTE:
Before doing this troubleshooting procedure, find out if the vehicle was
in a collision. If
Special Tools Required
SRS Inflator Simulator 07SAZ-TB4011A
SRS Simulator Lead L 070AZ-SNAA300
NOTE:
Before doing this troubleshooting procedure, find out if the vehicle was
in a collision. If
Special Tools Required
SRS Inflator Simulator 07SAZ-TB4011A
SRS Simulator Lead L 070AZ-SNAA300
NOTE:
Before doing this troubleshooting procedure, find out if the vehicle was
in a collision. If
SEE MORE:
■What to Do When Unable to Open the Tailgate
If you cannot open the tailgate, use the following procedure.
1. Wrap a cloth around the flat-tip
screwdriver. Put it into the cover as shown
in the image, and open it.
2. Wrap a cloth around the flat-tip
screwdriver. Put it into the lid as shown in
th
SRS COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT (KA/KC)
Inspection
1. Component Replacement/Inspection After Deployment - Inspect
NOTE:
Do not repair damaged SRS wiring. Replace the affected wiring harness (es).
Before doing any SRS repairs, check for DTCs with the HDS, for the less
obvio