32. OPERATION OF ABS AND ABS/ASR 4. TROUBLESHOOTING SWITCH Used for troubleshooting. 32.2 OPERATION METHOD 32.2.1 ABS OPERATION WARNING Always stop the truck before turning on the ABS/ASR main switch 3 . If it is turned on while the truck is running, the ABS/ ASR may not function normally. 1. Turn on the truck starting switch 1 . At this time, warning lamp 2 will light up. 2. Turn on the ABS/ASR main switch 3 . Start the truck. When the speed rises to about 10 km/h (6.2 MPH), the warning lamp 2 will go off. If the truck starting switch 1 is turned on/off while the ABS/ASR main switch 3 is turned on, the electric power for the ABS/ASR system will also be turned on/off.
Accordingly, keep the ABS/ASR main switch turned on for nor- mal operation. 32.2.2 ASR OPERATION WARNING Turn on the troubleshooting switch 5 only when performing troubleshooting on the truck. The ABS/ASR system will not function while the troubleshooting switch is turned on. 1. Since the ASR and ABS are interlocked, if the ABS is turned on, the ASR is also turned on automatically. 2. The ASR information lamp 4 lights up when the system detects slippage of the rear wheels, and the ASR starts functioning. 5-29