Honda HR-V: DTC Troubleshooting 81-51, 81-52, 81-53: Internal Failure of the Front
Passenger's Weight Sensor Unit
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 and General Troubleshooting Information.
- Before replacing the front passenger's weight sensor unit, check the
front passenger's weight sensor unit software version with the HDS. If the
software version is not the latest,
update the front passenger's weight sensor unit software, and retest.
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1. Problem verification:
- Clear the DTCs with the HDS.
- Turn the vehicle to the ON mode, then wait for 10 seconds.
- Check for DTCs with the HDS.
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Is DTC 81-51, 81-52, or 81-53 indicated?
YES
The failure is duplicated. Replace the front passenger's weight sensor unit.
NO
Intermittent failure, the system is OK at this time. Go to Troubleshooting
Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.
DTC TROUBLESHOOTING 81-54: SHORT TO POWER IN THE FRONT PASSENGER'S WEIGHT
SENSOR POWER CIRCUIT
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 and General Troubleshooting Information.
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1. Problem verification:
- Clear the DTCs with the HDS.
- Turn the vehicle to the ON mode, then wait for 10 seconds.
- Check for DTCs with the HDS.
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Is DTC 81-54 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. Shorted wire check (SWSP1 line to power):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connectors.
Front passenger's weight sensor unit connector A (6P)
Front passenger's weight sensor unit connector B (6P)
Front passenger's weight sensor unit connector C (6P)
- Disconnect the front passenger's weight sensor (front inner side) 3P
connector (A) on the front passenger's seat wire harness.
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- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there about 5 V or more?
YES
Short to power in the front passenger's seat wire harness; replace the front
passenger's seat wire harness, then clear the DTC.
NO
The SWSP1 wire is OK. Go to step 3.
3. Shorted wire check (SWSP2 line to power):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the front passenger's weight sensor (rear inner side) 3P
connector (A) on the front passenger's seat wire harness.
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- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there about 5 V or more?
YES
Short to power in the front passenger's seat wire harness; replace the front
passenger's seat wire harness, then clear the DTC.
NO
The SWSP2 wire is OK. Go to step 4.
4. Shorted wire check (SWSP3 line to power):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the front passenger's weight sensor (front outer side) 3P
connector (A) on the front passenger's seat wire harness.
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- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there about 5 V or more?
YES
Short to power in the front passenger's seat wire harness; replace the front
passenger's seat wire harness, then clear the DTC.
NO
The SWSP3 wire is OK. Short to power in the front passenger's seat wire
harness; replace the front passenger's seat wire harness, then clear the DTC.
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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 pa
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 pa
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 pa
SEE MORE:
* PLEASE READ THIS FIRST *
NOTE: This is GENERAL information. This article is not intended to be
specific to any
unique situation or individual vehicle configuration. For model-specific
information see appropriate articles where available.
ALL MODELS
NOTE: This is GENERAL information. This article
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, rev