Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Acura 3.5RL 1996-2004 Approved srm RL9604S11059A

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RL9604S11059A


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             Main Menu                 Table of Contents


PGM-FI System
 System Description
 INPUTS                                     POWERTRAIN CONTROL MODULE (PCM)            OUTPUTS
  CKP/CYP Sensor     Cruise Control                                                     Injectors
  MAP Sensor          Signal ('04)                                                      PGM-FI Main Relay (Fuel Pump)
  ECT Sensor                                                                            Fuel Pump Relay
  IAT Sensor                                                                            MIL
  TP Sensor                                                                             D4 Indicator Light
  EGR Valve Position Sensor                                                             IAC Valve
  Left Primary HO2S                                                                     A/C Compressor Clutch Relay
  Right Primary HO2S                                                                    ICM
  Secondary HO2S                                                                        EVAP Canister Purge Valve
  VSS                                          Idle Air Injector Timing and Duration
                                                                                        Left Primary HO2S Heater
  BARO Sensor                                                                           Right Primary HO2S Heater
  Left Knock Sensor                            Idle Air Control                         Secondary HO2S Heater
  Right Knock Sensor                                                                    EGR Valve Vacuum Control Valve
  TCS Signals*                                                                          Pressure Regulator Vacuum
  VSA Signals*1                                Other Control Functions
                                                                                          Control Solenoid Valve
  Spark Plug Voltage Detection                                                          IMRC Solenoid Valve 1
    Module Signal                              Ignition Timing Control                  IMRC Solenoid Valve 2
  Starter Signal                                                                        DLC
  ALT FR Signal                                                                         Torque Converter Clutch Solenoid
                                               PCM Back-up Functions
  Air Conditioning Signal                                                                 Valve
  Transmission Range Switch Signal                                                      Shift Solenoid Valve
  Battery Voltage (IGN.1)                                                               A/T Clutch Pressure Control
  Brake Pedal Position Switch Signal                                                      Solenoid Valve
  PSP Switch Signal                                                                     EVAP Bypass Solenoid Valve
  Immobilizer Signal                                                                    EVAP Canister Vent Shut Valve
  FTP Sensor                                                                            Engine Mount Control Solenoid
  Countershaft Speed Sensor                                                               Valve
  Mainshaft Speed Sensor                                                                Coolant Temperature Gauge ('04)
  *: with TCS
 *1: with VSA

PGM-FI System
The PGM-FI system on this model is a sequential multiport fuel injection system.

Injector Timing and Duration
The PCM contains memories for the basic discharge durations at various engine speeds and manifold pressures. The
basic discharge duration, after being read out from the memory, is further modified by signals sent from various sensors
to obtain the final discharge duration.

Idle Air Control
Idle Air Control Valve (IAC Valve)
When the engine is cold, the A/C compressor is on, the transmission is in gear, the brake pedal is depressed, the power
steering load is high, or the alternator is charging, the PCM controls current to the IAC Valve to maintain the correct idle
speed.

 Ignition Timing Control
 



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