SAFARI

16 TRANSFER CASE Self Diagnosis of ECU : Refer fig. 4&5 ECU detects transfer case system malfunctions and indicates malfunctioning part (s) through flashing indictor light mounted on dashboard. The operator will be alerted of fault condition by continuous illumination of both 4WD HI and 4WD LO lights, on dash board when ignition is on. A Service connector is provided to indicate the fault codes in binary.Connect one end of service connector in to the pin hole No. 22 in ECU connector and other end to the ignition switch. (In case a connector is provided to hole No. 22. Connect the end to it.) The flashing (ON/OFF) of indicator light will show Binary code (as illustrated in the table). Identify the malfunctioning part and replace it. L1 L2 L3 Binary Decimal Fault with Code Equivalent Off Off On 001 1 ECUModule Off On Off 010 2 Shift Motor Off On On 011 3 Synchro- nizer Clutch On Off Off 100 4 Speed Sensor On On Off 110 6 Selector switch On On On 111 7 Motor Position switch DiagnosticTable Connect a service connector. Turn the ignition switch on. 4WD CHECK indicator will turn on for a fraction of second and turn off for 3 seconds. Then it will display a defective code 3 times continuously. NO. Defect Codes Malfunc- tioning Part 1 ECU 2 Shift Motor 3 Synchro nizer Clutch 4 Speed Sensor 6 Selector Switch 7 Motor Position Sensor Fig. 4 Fig. 5 If only one part is malfunctioning, the indicator light will display defective code three times continuously. If more than two parts are malfunctioning, the first malfunctioning part will be displayed three times and then the other malfunctioning parts will be displayed. After repair, clear the fault stored in thememory.Ground the service connector and keep ignition 'on' for five seconds to erase defective code. Note : Before replacing the malfunctioning parts with defective code. Check the wires and connectors for proper condition. Use only 12V 3Watt bulb for diagnostic purpose.