Nissan 240sx S13 Engine Performance Pin Voltage Charts

Nissan 240sx S13



Pin voltage charts are supplied to reduce diagnostic time. Checking pin voltages at the PCM connector determines whether it is receiving and transmitting proper voltage signals. Diagnostic charts may also help determine if PCM harness is shorted or open.

NOTE: Unless stated otherwise in testing procedures, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Voltage readings may vary slightly due to battery condition or charging rate.

TEST PROCEDURE

CAUTION: Short circuiting positive DVOM lead between a connector terminal and ground could damage vehicle wiring, sensor and/or PCM.

1. If necessary, remove control module to access harness connector. Using DVOM, backprobe terminals with positive lead. Connect negative lead to ground terminal or chassis ground.
2. Voltage measurements are taken with engine warm unless otherwise specified. If DVOM displays measurement that is not within specification, see appropriate articles below:

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PIN VOLTAGE CHARTS

Fig. 1: ECM Connector Terminal ID (240SX)


PIN VOLTAGE CHART

• Terminal Wire Color
  • 1 White
    • Function/Description: Ignition Signal
    • Voltage Value (DC Volts): KOER, Idle - 0.2-0.3V KOER, 2000 RPM 0.8V
  • 3 Yellow/Red
    • Function/Description: Ignition Check
    • Voltage Value (DC Volts): KOER, Idle - 11-14V
  • 4 Red/Black
    • Function/Description: ECCS Relay (Main Relay)
    • Voltage Value (DC Volts): Turn Ignition Off 0-1V For 1st 2 Sec Turn Ignition Off 11-14 After 1st 2 Sec
  • 8 Red/Blue
    • Function/Description: EGR Temperature Sensor
    • Voltage Value (DC Volts): KOER, EGR Not Operating - 3-4V KOER, EGR Operating 0-1V
  • 11 Green/Yellow
    • Function/Description: AC Relay
    • Voltage Value (DC Volts): AC and Blower Switch On - 0.7V A/C and Blower Switch Off - 11-14V
  • 16 White
    • Function/Description: Mass Airflow Sensor
    • Voltage Value (DC Volts): KOER, Idle - 0.8-3.0V Varies W/ Engine Speed
  • 18 Blue/Orange
    • Function/Description: Coolant Temperature Sensor
    • Voltage Value (DC Volts): KOER - 1-3V Varies W/ Temperature
  • 19 White
    • Function/Description: Oxygen Sensor
    • Voltage Value (DC Volts): KOER, Warm Engine 0.1-1.0V
  • 20 White
    • Function/Description: Throttle Position
    • Voltage Value (DC Volts): Sensor KOEO - 0.3-5.0V
  • 22 White
    • Function/Description: Crankshaft Position Sensor (Reference Signal)
    • Voltage Value (DC Volts): KOER - 0.1-1.3V
  • 25 Green/Yellow
    • Function/Description: Swirl Control Solenoid Valve
    • Voltage Value (DC Volts): KOER, Idle 0-1V KOER, 2000 RPM 11-14V
  • 27 White
    • Function/Description: Knock Sensor
    • Voltage Value (DC Volts): KOER, Approx. 2.5V
  • 30 White
    • Function/Description: Crankshaft Position Sensor (Reference Signal)
    • Voltage Value (DC Volts): KOER - 0.1-1.3V
  • 31 Black
    • Function/Description: Crankshaft Position Sensor (Position Signal)
    • Voltage Value (DC Volts): KOER - 2-3V
  • 34 Orange
    • Function/Description: Start Signal
    • Voltage Value (DC Volts): KOEC - Approx. 12V
  • 35 Green/Orange
    • Function/Description: Neutral Switch
    • Voltage Value (DC Volts): KOEO, Neutral Position - 0V KOEO, Except Neutral Position - 6-7V
  • 36 Black/Red
    • Function/Description: Ignition Switch
    • Voltage Value (DC Volts): KOEO - 11-14V
  • 37 Lt. Green/Red
    • Function/Description: TPS Power Supply
    • Voltage Value (DC Volts): KOEO - 5V
  • 38 Black/White
    • Function/Description: ECM Power Supply
    • Voltage Value (DC Volts): KOEO - 11-14V
  • 40 Black
    • Function/Description: Crankshaft Position Sensor (Position Signal)
    • Voltage Value (DC Volts): KOER - 2.0-3.0V
  • 41 Blue/Green
    • Function/Description: AC Switch
    • Voltage Value (DC Volts): AC Switch On 0V AC Switch Off 11-14V
  • 43 Brown
    • Function/Description: Power Steering Pressure Switch
    • Voltage Value (DC Volts): KOER, Wheels Straight Approx. 8V KOER, Wheels Turned Approx. 0V
  • 46 Red
    • Function/Description: Power Supply (Back-Up)
    • Voltage Value (DC Volts): Ignition Switch Off 11-14V
  • 47 Black/White
    • Function/Description: ECM Power Supply
    • Voltage Value (DC Volts): KOEO - 11-14V
  • 101 White/Black
    • Function/Description: Injector No. 1
    • Voltage Value (DC Volts): KOER - 11-14V
  • 102 Pink
    • Function/Description: PAIRC Solenoid Valve
    • Voltage Value (DC Volts): KOER, Engine Warm, Idle - 0.7V KOER, Engine Warm, 2000 RPM - 11-14V
  • 103 Green/Black
    • Function/Description: Injector No. 3
    • Voltage Value (DC Volts): KOER - 11-14V
  • 104 Black/Pink
    • Function/Description: Fuel Pump Relay
    • Voltage Value (DC Volts): Turn Ignition On, 0.8V For First 5 Sec. Turn Ignition On, 11-14V After First 5 Seconds
  • 105 Lt. Green
    • Function/Description: EGRC Solenoid Valve
    • Voltage Value (DC Volts): KOER, Cold Engine 0.7V KOER, Warm Engine 2000 RPM - 11-14V
  • 110 Yellow/Black
    • Function/Description: Injector No. 2
    • Voltage Value (DC Volts): KOER - 11-14V
  • 112 Green/Yellow
    • Function/Description: Injector No. 4
    • Voltage Value (DC Volts): KOER - 11-14V
  • 113 Lt. Blue
    • Function/Description: IACV-AAC Valve KOER - Key On, Engine Running
    • Voltage Value (DC Volts): KOER, Normal Idle Speed - 9-14V KOER, Increased Idle Demand - 5-9V

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Nissan 240sx S13

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