Page 969 - Workshop Manual - Tunland (2017)
P. 969

DIAGNOSTICS - ENGINE CONTROL SYSTEM                          04-283

                                                                                                                     04
                      Fault phenomenon                 Possible reasons                      Refer to
                                                                                  particulate filter - excess
                                                  4. Post precessing DPF
                                                                                  removal for soot
                                                  1. Fuel

                                                  2. Post precessing DPF
                                                  pressure difference sensor
                                                                                  Chapter 04 Diagnosis- the
                  Postprocessing diesel           3. EGR system                   motor control system,
                  particulate filter - excessively  4. Fuel system                postprocessing diesel
                  automatic and / or fixed                                        particulate filter - excessively
                  regeneration                    5. Turbocharger                 automatic and / or fixed
                                                  6. Post precessing DOC          regeneration

                                                  7. Post precessing DPF
                                                  8. ECM

                                                  1. Clutch switch
                                                  2. Brake switch

                                                  3. PTO or remote PTO switch
                                                  4. Accelerator pedal position
                                                  sensor                          Chapter 04 Diagnosis- the
                  Fixed regeneration - cannot
                                                                                  motor control system, fixed
                  start                           5. Vehicle speed sensor
                                                                                  regeneration - cannot start
                                                  6. Gear shift mechanism
                                                  7. Post precessing DPF

                                                  8. Parking brake switch
                                                  9. ECM

                                                  1. Postprocessing system
                                                  2. Postprocessing DPF           Chapter 04 Diagnosis- the
                  Fixed regeneration - not        temperature sensor              motor control system, fixed
                  completed
                                                  3. Turbocharger                 regeneration - not completed
                                                  4. ECM

                                                  1. Key switch or key switch
                                                  circuit
                                                                                  Chapter 04 Diagnosis- the
                  Fault code warning light is not  2. Trouble code warning light
                                                                                  motor control system, fault
                  on                              3. Trouble code warning         code warning light is not on
                                                  indicator circuit
                                                  4. BCM

                                                  1. Engine oil                   Chapter 04 Diagnosis- the
                  Too much oil sludge in the      2. Lubrication system           motor control system, too
                  crankcase                                                       much oil sludge in the
                                                  3. Cooling system               crankcase
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