I have two Diahatsu Hijet EFI 4x4 trucks one is a 2000 model and the othet is a 2001 model. On the 2001 model you must press down the clutch to start the endine. On the 2001 model it will start without pressing the clutch - this is not safe as it will start even in gear and start to roll off. I think there is a clutch depression switch or sensor of some type that isn't working or has come unplugged. However, I can't find it. Any ideas?