Diagnostics & Fault Recovery: Notes

The ECU incorporates Fault Recovery Strategies to minimize the effect of a system failure. A serial data link is provided to allow diagnostic information to be retrieved using the Lucas handheld tester. This is also used to set height sensor data when required. Note that the serial link connector is colored Black for identification purposes. Any faults stored in the ECU memory, from previous or current running period will cause the ECU to flash the RAISE and LOWER lamps for 30 seconds, followed by continuous illumination. If the ECU registers a system fault, it will store the fault in the memory. The fault recovery program will operate the system depending on the nature of the fault as follows.