ZEST BOLT Service Manual

Automated Manual Transmission 23 Clutch Kiss Point Self Tuning: The guidelines of the procedure are illustrat- ed below: When? At vehicle Grid self tuning After replacing the control unit After replacing/removing gearbox After replacing/removing KIT (uncoupling) After replacing clutch Why? The routine is designed to quickly recalcu- late the "kiss point" which is the position at which the clutch starts to transmit drive torque. What tools are needed? Diagnosis equipment NOTES: The procedure takes approximately 1 minute. Power latch takes approximately 15 seconds. The procedure must be requested before starting the engine, with key-on and trans- mission in neutral. The engine can then be started. The procedure can also be requested after starting the engine providing the gearbox is in neutral. If the gearbox is not in neutral, the request remains pending until neutral is en- gaged (see below) It is necessary to wait for the TCU to com- plete the 5 activation cycles before key off. The 5 cycles are carried out automatically with the command sent only once. The pro- cedure can start in the following conditions: Ignition ON No gear change in progress Transmission in neutral Engine on. The instrument request will remain pending until at least one of the previous conditions occurs. The procedure will be run as soon as the aforesaid conditions occur. The following conditions are monitored dur- ing the procedure: Ignition ON Transmission in neutral Clutch position sensor ok Engagement actuators OK Sensor/actuator/ECU power supply OK If even only one of the above conditions is no longer satisfied, the procedure is aborted (auto calibration not ok). The test equipment cannot request the inter- ruption of the procedure. It will be concluded after having been started. No gear change requests are made during the kiss calibration procedure. Grid Self-Tuning: The guidelines of the procedure are illustrat- ed below: When? At Grid self tuning (when necessary) After replacing the gearbox After replacing/uncoupling KIT After replacement of any selection or en- gagement Sensor After replacing the control unit Why? The routine is designed to memorise the gear change grid thresholds. What tools are needed? Diagnosis tool