DTC B1676[AJ (3.0L Duratec)]

id040242802500

Note
•  DTC B1676 is stored in memory when the ABS CM system voltage (9 V or less or 19 V or more) is detected.

DTC
B1676
Battery voltage
MALFUNCTION
•  Battery voltage is out of specification.

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
INSPECT VEHICLE CONDITION
•  Has the vehicle been towed with wheels not on the ground within the past two weeks?
Yes
•  Clear the DTC from the memory and perform the self-test.
No
•  Go to the next step.
2
INSPECT BATTERY VOLTAGE
•  Measure the voltage between the battery positive terminal and negative terminal.
•  Is the voltage between 9—19 V?
Yes
•  Go to the next step.
No
•  Charge or replace the battery. Clear the DTC from the memory and perform the self-test.
3
INSPECT CHARGING SYSTEM
•  Start the engine and idle it at 2,000 rpm, and measure the voltage between the battery positive terminal and negative terminal.
•  Is the voltage between 9—19 V?
Yes
•  Go to the next step.
No
•  Repair the charging system. Clear the DTC from the memory and perform the self-test.
4
INSPECT ABS HU/CM TERMINAL O VOLTAGE
•  Turn the ignition switch off.
•  Disconnect the ABS HU/CM connectors.
•  Measure the voltage between the ABS HU/CM terminal and ground.
•  Is the voltage more than 10 V?
Yes
•  Go to the next step.
No
•  Repair or replace the wiring harness and clear the DTC from the memory. Repeat the self-test.
5
INSPECT ABS HU/CM TERMINAL C VOLTAGE
•  Turn the ignition switch off.
•  Measure the voltage between the ABS HU/CM terminal A and ground.
•  Is the voltage more than 10 V?
Yes
•  Go to the next step.
No
•  Repair or replace the wiring harness and clear the DTC from the memory. Repeat the self-test.
6
INSPECT ABS HU/CM TERMINAL B VOLTAGE
•  Measure the voltage between the ABS HU/CM terminal B and ground.
•  Is the voltage more than 10 V?
Yes
•  Go to the next step.
No
•  Repair or replace the wiring harness and clear the DTC from the memory. Repeat the self-test.
7
INSPECT ABS HU/CM TERMINAL C AND D FOR OPEN CIRCUIT
•  Measure the resistance between the ABS HU/CM terminal C and ground, and between ABS HU/CM terminal D and ground.
•  Is the resistance less than 5 ohms?
Yes
•  Replace the ABS HU/CM.
Clear the DTC from the memory. Repeat the self-test.
No
•  Repair or replace the wiring harness and clear the DTC from the memory. Repeat the self-test.