B0560
DTC B0560
Circuit Description
The instrument panel cluster (IPC) receives the engine speed information from the powertrain control module (PCM) through the engine speed signal circuit. The PCM converts the data from the engine speed sensor to a 2 pulses/(engine revolution) signal. The PCM also sends a class 2 message to the IPC indicating the engine speed. If the IPC determines there is a loss of the engine speed signal from the PCM due to a engine speed signal circuit malfunction, a DTC sets.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B0560 Tachometer Circuit
Conditions for Running the DTC
* The engine speed is greater than 800 RPM.
* The ignition voltage is greater than 9 volts, but less than 18 volts.
Conditions for Setting the DTC
* The IPC detects that the engine speed signal circuit does not match the engine speed from the class 2 serial data circuit.
* The above condition is present for at least 5 seconds.
Action Taken When the DTC Sets
The IPC stores the DTC in memory.
Conditions for Clearing the DTC
* A last test failed (current DTC) clears when the diagnostic runs and does not fail.
* A history DTC clears after 100 consecutive malfunction-free warm-up cycles.
* The IPC receives the clear code command from the scan tool.
Test
