4.2 Circuit Diagram Key "ON" Relay LOCK ACC ON START Pressure Control Valve STA/SW KEY/SW PCV1 PCV1 PCV2 KEY/SW DIAG-L PCV2 Diagnosis Light DG/SW Diagnosis S/W PCV Relay COMMON1 COMMON1 COMMON2 +BP +BP COMMON2 M-REL M-REL TWV1 TWV1 TWV Main Relay TWV2 12V TWV2 TWV3 TWV3 GND GND TWV4 P-GND P-GND TWV4 TWV5 TWV5 TWV6 TWV6 Crank Position Sensor (NE Sensor) NE+ A/T Relay NE- NE-SLD AT-REL Cylinder Recognition Sensor (TDC Sensor) G+ G- G-SLD Exhaust Break Relay Exhaust Break S/W J1708A EXB-REL J1708B ACC1-VCC EXB/SW Sensor 1 Accelerator Sensor ACC2-VCC ACC1 IDLUP/SW Idle-up S/W Sensor 2 ACC2 ACC1-GND ACC2-GND IDLDWN/SW Idle-down S/W TM/SW Transmission S/W Neutral S/W Injection Quantity Adjustment Resistor FQ1 FQ2 FQ3 FQ-GND N/SW Clutch S/W MCLR/SW CL/SW Memory Clear S/W Atmospheric Air Temperature Sensor THA MF AM/SIG MF AM/SIG Fuel Temperature Sensor THF MF AM/USE MF AM/USE Coolant Temperature Sensor THV TH-GND Rail Pressure Sensor PFUEL-VCC PFUEL PFUEL PFUEL-GND Boost Pressure Sensor A-VCC PBOOST CHECKER Tool Display A-GND TACHO Tachometer Case GND 21 Q000113E