Titan 2WD V8-5.6L (VK56DE) Flex Fuel (2009)
YES (Past error) - Error was detected in the data link connector branch line circuit.
NO - Repair the data link connector branch line.
ECM Branch Line Circuit
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
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ECM
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Harness connector E5
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Harness connector F14
Is the inspection result normal?
YES - GO TO 2.
NO - Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ECM.
2. Check the resistance between the ECM harness connector terminals.
Is the measurement value within the specification?
YES - GO TO 3.
NO - Repair the ECM branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to See: Testing and Inspection/Component Tests and General Diagnostics/Power
Supply And Ground Circuit/Diagnosis Procedure.
Is the inspection result normal?
YES (Present error) - Replace the ECM. Refer to See: Testing and Inspection/Programming and Relearning/Procedure After Replacing ECM.
YES (Past error) - Error was detected in the ECM branch line.
NO - Repair the power supply and the ground circuit.
BCM Branch Line Circuit
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
YES - GO TO 2.
NO - Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of BCM.
2. Check the resistance between the BCM harness connector terminals.
Is the measurement value within the specification?
YES - GO TO 3.
NO - Repair the BCM branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to See: Body and Frame/Body Control Systems/Testing and Inspection/Component