Description:

Error code ECU 000656.06 is set when the ECU detects a short circuit in the electronic injector circuit for cylinder no. 6, resulting in resistance that is too low. This condition typically indicates a short to ground, which can cause the injector to malfunction, leading to misfires, inconsistent fuel delivery, and potential damage to the injector and other engine components.

Reaction:

The ECU may disable the injector to prevent damage and alert the operator to the fault.

Recommendations:

• Inspect for Short Circuits: Check the wiring and connectors for the injector in cylinder no. 6 for signs of short circuits to ground or other conductive surfaces. Look for damaged insulation, frayed wires, or loose connections that could cause a short.
• Measure Circuit Resistance: Use diagnostic tools to measure the resistance in the injector circuit and identify the location of the short. Low resistance readings confirm a short circuit.
• Repair or Replace Damaged Wiring: Fix any identified short circuits by repairing or replacing faulty wiring, connectors, or terminals. Ensure all connections are secure and properly insulated.
• Verify Injector Operation: After repairs, test the injector to ensure it functions correctly and the short circuit issue is resolved. Confirm that the injector delivers fuel properly.
• Reset ECU and Conduct System Tests: Reset the ECU to clear the error code and perform tests to confirm that the injector operates correctly and no further errors are detected.

Note:

Proper maintenance of injector wiring and connections is essential to avoid short circuits and ensure reliable engine performance. Regular inspections and timely repairs can help prevent such issues and maintain the integrity of the engine’s fuel delivery system.