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DTC Troubleshooting: B1647
DTC B1647: Passenger Door LF Antenna Circuit Short
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DTC Description |
DTC |
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B1647 Passenger's Door LF Antenna Circuit Short |
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1. |
Problem verification:
Problem verification
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?1. |
Clear the DTCs with the HDS.
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?2. |
Select the MODE MENU from the HDS, then enter the SELF CHECK.
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?4. |
Check for DTCs with the HDS.
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DTC Description |
DTC |
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B1647 Passenger's Door LF Antenna Circuit Short |
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Is DTC B1647 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. |
Shorted wire check (EXT FR AS+, EXT FR AS- lines):
Shorted wire check (EXT FR AS+, EXT FR AS- lines)
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?1. |
Press the engine start/stop button to select the OFF mode. |
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?2. |
Disconnect the following connectors.
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?3. |
Check for continuity between test points 1 and 2 individually.
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Test condition |
OFF mode
Keyless access control unit connector A (32P): disconnected
Front passenger's door outer handle 8P connector: disconnected |
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Test circuit |
EXT FR AS+ |
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Test point 1 |
Keyless access control unit connector A (32P) No. 22 (GRN) |
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Test point 2 |
Body ground | |
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Test circuit |
EXT FR AS- |
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Test point 1 |
Keyless access control unit connector A (32P) No. 6 (BLU) |
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Test point 2 |
Body ground | |
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Is there continuity?
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Repair a short to ground in the wire.? |
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The EXT FR AS+ and EXT FR AS- wires are not shorted. Go to step 3. |
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3. |
Shorted wire check (EXT FR AS+ line to EXT FR AS- line):
Shorted wire check (EXT FR AS+ line to EXT FR AS- line)
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?1. |
Check for continuity between test points 1 and 2.
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Test condition |
OFF mode
Keyless access control unit connector A (32P): disconnected
Front passenger's door outer handle 8P connector: disconnected |
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Test circuit |
EXT FR AS+, EXT FR AS- |
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Test point 1 |
Keyless access control unit connector A (32P) No. 6 (BLU) |
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Test point 2 |
Keyless access control unit connector A (32P) No. 22 (GRN) | |
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Is there continuity?
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Repair a short in EXT FR AS+ wire to EXT FR AS- wire.? |
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The EXT FR AS+ and EXT FR AS- wires are OK. Go to step 4. |
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4. |
Determine possible failure area (Keyless access control unit, front passenger's door LF antenna):
Determine possible failure area (Keyless access control unit, front passenger's door LF antenna)
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?1. |
Reconnect the following connectors.
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?2. |
Press the engine start/stop button to select the ON mode. |
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?3. |
Select KEYLESS ACCESS CONTROL from the ONE-PUSH START system select menu with the HDS, and enter FUNCTIONAL TESTS.
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?4. |
Connect the voltmeter to test points 1 and 2.
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Test point 1 |
Front passenger's door outer handle 8P connector No. 2 (GRN) |
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Test point 2 |
Front passenger's door outer handle 8P connector No. 6 (BLU) | |
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?5. |
Select FRONT PASSENGER DOOR ANTENNA with the HDS. | |
Is there voltage?
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