Signals to engine Repair instructions Voltage. Pins 3 and 4 on the connector (item 17) in the higher-level cable electrical system, please refer to the “Wiring diagrams“ chapter 100% on the Y axis corresponds to full throttle and 0% corresponds to idling. 3. Pull the catch arm down at the same time as you pull the connector back. 9. Connect the connector and charge air pipe. Check that the control unit and connector are clean before assembly. This is to avoid con- tact problems. NOTE! When you connect the connector, press it forwards towards the control unit at the same time as you press the red catch arm upwards. This is important, to avoid damaging the contact pins. Voltage control.
0.8 V corresponds to idling and 2.8 V corresponds to full throttle. Frequency. “PWMIN” on the engine wiring diagram, please refer to the “Wiring diagram” chapter. 10.Check that the filter is absolutely clean and that the filter gasket is undamaged. Moisten the fuel filter gasket with oil. 11.Screw down the fuel filter by hand, until the gasket just touches the bracket. Then turn it another half turn by hand 100% on the Y axis corresponds to full throttle and 0% corresponds to idling. 12.Vent the fuel system, please refer to the “Venting the fuel system“ chapter. 13.Start the engine, check functioning, and check that no leakage occurs. 4.
Undo the charge air pipe from the T-nipple un- derneath the control unit. NOTE! Do not unto the T-nipple from the con- trol unit. 5. Unscrew the rear fuel filter. Use special tool 999 91796 for removal if necessary. NOTE! Be careful not to spill fuel. Frequency control. 85 Hz corresponds to idling and 350 Hz corresponds to full throttle. 6. Remove the control unit gland underneath the fixing lug, use a 27 mm spanner. 7. Remove the control unit. 8. Install the new control unit. Tightening torque: 38 ± 6 Nm Input signal appearance with frequency control 24 29