Honda HR-V: Forward Collision Warning (FCW) Symptom Troubleshooting - Both FCW And LDW Indicator (Amber) Do Not Go OFF
1. Problem verification:
- Turn the vehicle to the ON mode.
- Wait for about 6 seconds.
Do both FCW and LDW indicator go off?
YES
Intermittent failure, the system is OK.
NO
Go to step 2.
2. Fuse check 1:
- Turn the vehicle to the OFF (LOCK) mode.
- Wait for 10 seconds (For multi purpose camera unit shut down) and check the following fuse.
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Is the fuse OK?
YES
The fuse is OK. Reinstall the fuse, then go to step 3.
NO
Replace the fuse. If the fuse blows again, repair the short to ground on the No. C21 (10 A) fuse circuit.
3. Fuse check 2:
- Wait for 10 seconds (For multi purpose camera unit shut down) and check the following fuse.
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Is the fuse OK?
YES
The fuse is OK. Reinstall the fuse, then go to step 4.
NO
Replace the fuse. Turn the vehicle to ON mode, then back to the OFF (LOCK) mode. If the fuse blows again, repair the short to ground on the No. C27 (7.5 A) fuse circuit.
4. Open wire check (IG1 VSA/EPS line):
- Turn the vehicle to the OFF (LOCK) mode.
- Wait for 10 seconds (For multi purpose camera unit shut down) and disconnect the following connector.
Multi purpose camera unit 12P connector
- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The IG1 VSA/EPS wire is OK. Go to step 5.
NO
Repair an open in the wire between the under-dash fuse box and the multi purpose camera unit.
5. Open wire check (+B MP CAMERA line):
- Turn the vehicle to the OFF (LOCK) mode.
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The +B MP CAMERA wire is OK. Go to step 6.
NO
Repair an open in the wire between the multi purpose camera unit and the under-dash fuse/relay box.
6. Open wire check (GND line):
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
The GND wire is OK. Go to step 7.
NO
Repair an open in the wire between the multi purpose camera unit and the body ground at G501.
7. Open wire check (IG1 VSA/EPS line):
- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The IG1 VSA/EPS wire is OK. Go to step 8.
NO
Repair an open in the wire between the LDW OFF switch and the under-dash fuse/relay box.
8. Open wire check (LDW OFF SW line):
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
Go to step 9.
NO
Go to step 10.
9. Open wire check (LDW OFF SW line):
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
Check for loose terminals in the multi purpose camera 12P connector. If the multi purpose camera was updated and the symptom/indication is still present, replace the multi purpose camera unit.
NO
Repair an open in the wire between the LDW OFF switch and the multi purpose camera unit.
10.Shorted wire check (LDW OFF SW line):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connector.
LDW OFF switch 12P connector
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
Repair a short to body ground in the wire between the LDW OFF switch and the multi purpose camera unit.
NO
Replace the LDW OFF switch.
Troubleshooting Start
READ NEXT:
Forward Collision Warning (FCW) Symptom Troubleshooting - FCW
Indicator (Amber) Does Not Blink When The System Warns, FCW Warning Buzzer Does
Not Sound When The System Warns
1. FCW indicator and warning buzzer check:
Select FCW/LDW/High Beam Support/Traffic Sign Recognition System from
the DRIVING SUPPORT
menu with the HDS, and enter the FUNCTION TEST.
Select FCW dr
HDS Does Not Communicate With The Multi Purpose Camera Unit (Forward
Collision Warning (FCW)
Refer to: go to the DLC circuit troubleshooting
HDS DOES NOT COMMUNICATE WITH THE MULTI PURPOSE CAMERA UNIT (LANE
DEPARTURE WARNING (LDW)
Refer to: go to the DLC circuit troubleshooting
LDW OFF SWITCH
Lane Departure Warning (LDW) Symptom Troubleshooting - LDW OFF
Switch Does Not Work Or OFF Indicator Does Not Come ON
1. LDW OFF switch indicator check 1:
Turn the vehicle to the ON mode.
Operate the LDW OFF switch.
Check and note the parameter below with the HDS.
Does the value change?
YES
Go to step 2.
NO
Go
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Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
Operate any one of the four solenoids in the VSA FU
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NOTE:
Troubleshoot any PGM-FI DTCs first - Refer to: How to Troubleshoot the
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Before you troubleshoot, review the how to troubleshoot the electric
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