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DTC Troubleshooting: B1664
DTC B1664: Rear interior LF antenna circuit open
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DTC Description |
DTC |
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B1664 Rear interior LF antenna circuit open |
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1. |
Problem verification:
Problem verification
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?1. |
Turn the vehicle to the ON mode. |
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?2. |
Clear the DTCs with the HDS.
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?3. |
Select the KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter the SELF CHECK. |
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?4. |
Do the SELF CHECK.
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?5. |
Check for DTCs with the HDS.
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DTC Description |
DTC |
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B1664 Rear interior LF antenna circuit open |
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Is DTC B1664 indicated?
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Intermittent failure, the system is OK at this time. Check for loose or poor connections.? |
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2. |
EXT R+, EXT R- line output check:
EXT R+, EXT R- line output check
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?1. |
Turn the vehicle to the OFF (LOCK) mode. |
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?2. |
Disconnect the following connector.
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Rear interior LF antenna 2P connector | |
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?3. |
Turn the vehicle to the ON mode. |
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?4. |
Measure the voltage between test points 1 and 2.
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Test condition |
Vehicle ON mode
Rear interior LF antenna 2P connector: disconnected |
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Test point 1 |
Rear interior LF antenna 2P connector No. 1 |
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Test point 2 |
Rear interior LF antenna 2P connector No. 2 | |
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Is there voltage?
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3. |
Open wire check (EXT R+, EXT R- lines):
Open wire check (EXT R+, EXT R- lines)
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?1. |
Turn the vehicle to the OFF (LOCK) mode. |
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?2. |
Disconnect the following connector.
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Keyless access control unit connector A (32P) | |
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?3. |
Check for continuity between test points 1 and 2 respectively.
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Test condition |
Vehicle OFF (LOCK) mode
Keyless access control unit connector A (32P): disconnected
Rear interior LF antenna 2P connector: disconnected |
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Test point 1 |
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Test point 2 |
Rear interior LF antenna 2P connector No. 2 | |
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Test point 1 |
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Test point 2 |
Rear interior LF antenna 2P connector No. 1 | |
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Is there continuity?
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Repair an open or high resistance in the wire.? | |