DTC U1007:68 [FRONT BODY CONTROL MODULE (FBCM)]
id0902p2011000
System malfunction location |
Communication error with current sensor |
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Detection condition
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• The front body control module (FBCM) detects communication error with the current sensor for 5 s.
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Fail-safe
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—
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Possible cause
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• Malfunction in communication line between front body control module (FBCM) and current sensor
• Current sensor connector or terminal malfunction
• Short to ground or open circuit in current sensor power supply circuit
• Front body control module (FBCM) connector or terminal malfunction
• Short to ground in wiring harness between current sensor terminal B and front body control module (FBCM) terminal 2E
• Open circuit in wiring harness between current sensor terminal B and front body control module (FBCM) terminal 2E
• Current sensor malfunction
• Front body control module (FBCM) malfunction
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Diagnostic Procedure
Step |
Inspection |
Action |
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1
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VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN
• Clear front body control module (FBCM) DTCs using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 5 s or more.
• Perform the front body control module (FBCM) DTC inspection using the M-MDS.
• Is DTC U1007:68 displayed?
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Yes
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Go to the next step.
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No
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Go to Step 9.
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2
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INSPECT CURRENT SENSOR CONNECTOR
• Switch the ignition to off.
• Disconnect the current sensor connector.
• Disconnect the negative battery cable.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 8.
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3
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INSPECT CURRENT SENSOR POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND
• Verify that the current sensor connector is disconnected.
• Connect the negative battery cable.
• Measure the voltage at current sensor terminal A (vehicle wiring harness side).
• Is the voltage B+?
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Yes
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Go to the next step.
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No
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INSPECT MAIN 200 A FUSE AND ENG.+B 7.5 A FUSE
• If a fuse is burnt out:
• If a fuse is damaged:
• All fuses are normal:
Go to Step 8.
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4
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INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION
• Disconnect the negative battery cable.
• Disconnect the front body control module (FBCM) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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Yes
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Go to the next step.
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No
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Repair or replace the connector, then go to Step 8.
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5
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INSPECT CURRENT SENSOR LIN COMMUNICATION CIRCUIT FOR SHORT TO GROUND
• Verify that the current sensor and front body control module (FBCM) connectors are disconnected.
• Inspect for continuity between current sensor terminal B (vehicle wiring harness) and body ground.
• Is there continuity?
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Yes
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Repair or replace the wiring harness, then go to Step 8.
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No
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Go to the next step.
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6
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INSPECT CURRENT SENSOR LIN COMMUNICATION CIRCUIT FOR OPEN CIRCUIT
• Verify that the current sensor and front body control module (FBCM) connectors are disconnected.
• Inspect the wiring harness for continuity between current sensor terminal B (vehicle wiring harness side) and front body control module (FBCM) terminal 2E (vehicle wiring harness side).
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness, then go to Step 8.
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7
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INSPECT CURRENT SENSOR
• Inspect the current sensor.
• Is the current sensor normal?
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Yes
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Go to the next step.
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No
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Replace the current sensor, then go to the next step.
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8
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Reconnect all the disconnected connectors.
• Reconnect the disconnected negative battery cable.
• Clear front body control module (FBCM) DTCs using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 5 s or more.
• Perform the front body control module (FBCM) DTC inspection using the M-MDS.
• Is DTC U1007:68 displayed?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the front body control module (FBCM), then go to the next step.
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No
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Go to the next step.
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9
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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