Engine Control (KD FTV) (T) (T) 80 O 5 EFI J E MIN elay 4 D J J 4 J 8 J J EDU elay D55 VV (E) 5 5 E TT E IE 0 (), (), D(C), D(D) Engine ECU + ME 8 C O elay 4 D D5 low lug 04 HICE (ED6E)
8 D + DUT E VF VC D48(), D50() Throttle ody ssembly E (ide) (ide) 8 D4 Inlet ir Temp. Sensor (Intake Manifold) D44 D46 Fuel Temp. Sensor D ater Temp. Sensor (Engine Coolant) 8 D D 0 Inlet ir Temp. Sensor (ir Cleaner) 6 D ater Temp. Sensor (adiator) 4 C C 0 D 8 D D D D 0 US VU THI E THF TH TH TH (), (), D(C), D(D) Engine ECU INJF # # # #4 5 D 4 D D D D D4 Fuel Injector (No. ) D Fuel Injector (No. 4) D5 Fuel Injector (No. ) D6 Fuel Injector (No. ) 8 D 5 D 6 D 6 D D D 4 D 0 D D 5 D D D 4 D D 6 INJF #0 #0 5 #0 #40 4 5 INJ COM INJ4 INJ 6 COM INJ ND 8 + (), 5() Injector Driver (EDU) 05 HICE (ED6E)
Engine Control (KD FTV) O() Transmission Control ECU E IM VC D5 Turbo ressure Sensor E ES VC D5 E Valve osition Sensor E VC D45 Fuel ressure Sensor D44 CN+ DO CN 0 DO D 6 D IM ES C VC E NE+ NE CV+ CV E0 CN+ E0 CN EC (Shielded) (Shielded) 8 C C 6 D 8 D (), (), D(C), D(D) Engine ECU C C C D 4 D D D 6 D D 6 D0 Camshaft osition Sensor D Crankshaft osition Sensor NE NE D4 Suction Control Valve 6 4 (Shielded) D4 (Shielded) 5 0 D 06 HICE (ED6E)
(I) (T) (ST) 5 IN 0 STO. 5 ST 5E 5E 5J 4 5J 6 5E 4 6 IS T D Stop amp S 4 ST VC 4 5 8 8 D 5 H4 H4 0 ST E 5 V ST elay 4 ST (), (), D(C), D(D) Engine ECU VC E 4 5 6 V VC E V VC E V 0 4 6 8 6 8 D D D D D (M/T) (/T) (/T) FC FC FN D 8 D D N 5 4 D D Neutral Start S D 6 NS D M ccelerator osition Sensor Cooling Fan ECU No. Cooling Fan ECU No. D6() lternator FN elay 0 HICE (ED6E)
Engine Control (KD FTV) H8 /C mplifier (T) CNH 0 CN. 5 OD 5 5S SD 5 THO H 8 TCH SI H FSE C C ST lug H4 4 CNH H4 CN (), (), D(C), D(D) Engine ECU IND 4 H(), H4(), H5(C), H6(D) 8 TC 4 H4 D 5S 5E 5E 4 5H 5S TC FSE 5 5 5E SI 6C 4 H DC CN 5 H4 CNH 6 T TC S C 6 4 6F 6 6C 4 6C 6F D H 08 HICE (ED6E)
(I) (T) (I) 0 MET IN 0 DOME 0 UE 5M 5E Check Engine 6 5 I+ E low H 60 H 8 5E 8 5S 5 Temp. S Speedometer 5 4 4 5E H0 Combination Meter Tachometer +S S E SI 4 5 4 5D 58 H H HH D4 SI D4 E E 5 D4 I+ D8 Speed Sensor H 0 HICE (ED6E)
Engine Control (KD FTV) System Outline This system utilizes an engine ECU and maintains overall control of the engine, transmission and so on. n outline of the engine control is explained here.. Input Signals () ater temp. signal circuit The water temp. sensor (Engine coolant) detects the engine coolant temp. and has a built in thermistor with a resistance varies according to the engine coolant temp. Thus the engine coolant temp. is input in the form of a control signal to TEMIN TH of the engine ECU. () Intake air temp. signal circuit The intake air temp. sensor is detects the intake air temp., which is input as a control signal to TEMIN TH of the engine ECU. () M signal circuit Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor. Camshaft position is input as a control signal to TEMIN of the engine ECU, and engine M is input into TEMIN NE+. (4) Throttle signal circuit The accelerator position sensor detects the accelerator pedal opening angle, which is input as a control signal to TEMINS V and V of the engine ECU. (5) Vehicle speed signal circuit The speed sensor detects the vehicle speed and inputs a control signal to TEMIN SD of the engine ECU via the combination meter. (6) attery signal circuit Voltage is constantly applied to TEMIN TT of the engine ECU. hen the ignition S is turned to on, voltage for engine ECU operation is applied via the MIN relay to TEMIN + of the engine ECU. () Started signal circuit To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input as a control signal to TEMIN ST of the engine ECU. (8) Fuel temp. signal circuit The fuel temp. sensor is detects the fuel temp., which is input as a control signal to TEMIN THF of the engine ECU. () Intake air vacuum pressure signal system Intake air vacuum pressure is detected by the turbo pressure sensor and is input as a control signal to TEMIN IM of the engine ECU. 0 HICE (ED6E)
. Control System E control The E control system detects the signals from each sensor, then the current is output to the TEMIN E to control the VV (E). Common rail pressure control The target rail pressure is calculated according to the engine status (ccelerator opening, engine speed) and environmental change detected by sensors. The fuel amount to be pressure fed from the supply pump is calculated so as to match the indicated value of rail pressure sensor with the target value and the signal is sent to the intake amount adjusting valve of the supply pump in order to control the rail pressure. Fuel injection timing control The fuel injection timing is controlled by calculating the basic fuel injection timing based on the engine status (ccelerator opening, engine speed), making corrections according to environmental change detected by sensors, then sending a signal to the solenoid control valve of the injector via the injector driver (EDU). Fuel injection volume control The fuel injection volume is controlled by calculating the basic fuel injection volume based on the engine status (ccelerator opening, engine speed), making corrections according to environmental change detected by sensors and the inside pressure conditions in the rail, then sending a signal to the solenoid control valve of the injector via the injector driver (EDU). ilot injection control The fuel injection volume and timing are controlled by calculating the pilot injection volume/timing based on the engine status (ccelerator opening, engine speed), making corrections according to environmental change detected by sensors, then sending a signal to the solenoid control valve of the injector via the injector driver (EDU).. Diagnosis System ith the diagnosis system, when there is a malfunctioning in the engine ECU signal system, the malfunction system is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the check engine warning light. 4. Fail Safe System hen a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based on the signals from that system, the fail safe system either controls the system by using data (Standard values) recorded in the engine ECU memory or else stops the engine. HICE (ED6E)
Engine Control (KD FTV) 5 D : arts ocation Code See age Code See age Code See age 4 5 6 8 D 48 (HD) D C 56 (HD) 48 (HD) 56 (HD) 48 (HD) 56 (HD) 48 (HD) 56 (HD) D C : elay locks D6 D0 D D4 D5 D6 D D D D8 D4 D44 D45 D46 D4 Code See age elay locks (elay lock ocation) (*8) Engine oom / No. (Engine Compartment Front) 8 Engine oom / No. (Inside of attery oom) 4 Instrument anel / (Under the love ox) D48 D50 H H4 H5 H6 O D4 D5 D5 D5 D55 H8 H0 H C D 4, 4 (HD) 4, 5 (HD) 4, 4 (HD) 4, 5 (HD) 4, 4 (HD) 4, 5 (HD) 4, 4 (HD) 4, 5 (HD) 4 (HD) 5 (HD) 4 (HD) 5 (HD) 4 (HD) 5 (HD) 48 (HD) 56 (HD) * : HD T FE * : HD KD FTV * : HD 5 E * 4 : HD T FE * 5 : HD KD FTV * 6 : HD 5 E * : T FE * 8 : KD FTV, 5 E HICE (ED6E)
: lock and ire Harness Code See age lock and ire Harness ( ocation) E 4 J 5 Engine oom Main ire and Engine oom J/ No. (Engine Compartment Front) 5D 0 Instrument anel ire and Instrument anel J/ (eft Side of Instrument anel) 5E 0 Engine oom Main ire and Instrument anel J/ (eft Side of Instrument anel) 5H 5J 5M 5S 6C 6F 0 Instrument anel ire and Instrument anel J/ (eft Side of Instrument anel) 8 (HD) Instrument anel ire and Center J/ (Instrument anel einforcement H) 8 (HD) Instrument anel ire and Center J/ (Instrument anel einforcement H) 8 (HD) Instrument anel ire and Center J/ (Instrument anel einforcement H) 8 (HD) Instrument anel ire and Center J/ (Instrument anel einforcement H) : Joining ire Harness and ire Harness Code See age Joining ire Harness and ire Harness ( ocation) D D D D D4 DO H H4 HH 64 (HD) (HD) 6 (*) 6 (*) 6 (*) 6 (*) 6 (*) 6 (*) 64 (HD) (HD) 64 (HD) (HD) Cowl to Head amp ire and Engine oom Main ire (eft Side of the Instrument anel J/) Engine oom Main ire and Engine ire (Front Floor anel ight) Engine ire and Engine oom Main ire (Front Side of Engine oom / No.) Engine ire and Floor ire (Front Floor anel ight) Instrument anel ire and Engine oom Main ire (Under the Instrument anel J/) 64 (HD) Instrument anel ire and Instrument anel ire (Near the Steering Column) (HD) Instrument anel ire and Instrument anel ire (Instrument anel einforcement H) : round oints Code See age round oints ocation D H 6 (*) 6 (*) 6 (*) 64 (HD) (HD) Front Floor anel ight Front Floor anel eft Engine lock Instrument anel einforcement * : HD T FE * : HD KD FTV * : HD 5 E * 4 : HD T FE * 5 : HD KD FTV * 6 : HD 5 E * : T FE * 8 : KD FTV, 5 E HICE (ED6E)