Dtc 13 (2) Engine Speed Sensor Circuit Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT ENGINE SPEED SENSOR

CHECK ECM (TDC, NE SIGNAL)

CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR)

DTC 13 (2) Engine Speed Sensor Circuit Malfunction


DESCRIPTION

The engine speed sensor in the Engine Control System contains a signal plate and a pickup coil for NE signal. The NE signal plate has 56 teeth and is mounted in the injection pump. The NE signal sensor generates 56 signals for every 2 engine revolutions. The ECM detects the engine speed and cam lift position of the injection pump. The ECM uses TDC signals and NE signals for injection timing control. NE signals are also used for injection volume control.

DTC No.
DTC Detection Condition
Trouble Area
13 (2)
No NE signal to ECM for 0.5 sec. or more at 680 rpm or more
  1. Open or short in engine speed sensor circuit
  2. Engine speed sensor
  3. ECM
No NE signal to ECM for 2.0 sec. or more during cranking

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System. Dtc 13 (2) Engine Speed Sensor Circuit Malfunction


INSPECTION PROCEDURE

1.INSPECT ENGINE SPEED SENSOR


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System. Dtc 13 (2) Engine Speed Sensor Circuit Malfunction

  1. Check the engine speed sensor installation.

  1. Disconnect the E19 engine speed sensor connector.

  1. Measure the resistance of the engine speed sensor.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (NE-) - 2 (NE+)
    		20°C (68°F)
    		205 to 255 Ω
    HINT:
    The engine speed sensor is integrated with the injection pump assembly. If the engine speed sensor needs to be replaced, the entire injection pump assembly must be replaced.


NG
CHECK AND REPLACE INJECTION PUMP ASSEMBLY
OK


2.CHECK ECM (TDC, NE SIGNAL)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System. Dtc 13 (2) Engine Speed Sensor Circuit Malfunction

  1. While cranking or idling, measure the waveform according to the value(s) in the table below.

    OK:
    Tester Connection
    		Specified Condition
    E20-17 (TDC+) - E20-16 (TDC-)
    		Correct waveform is as shown
    E20-19 (NE+) - E20-18 (NE-)
    		Correct waveform is as shown
    Tool Setting
    		Condition
    2 V/DIV., 20 msec./DIV.
    		During idling


OK
REPLACE ECM
NG


3.CHECK HARNESS AND CONNECTOR (ECM - ENGINE SPEED SENSOR)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System. Dtc 13 (2) Engine Speed Sensor Circuit Malfunction

  1. Disconnect the E19 engine speed sensor connector.

  1. Disconnect the E20 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E19-2 (NE+) - E20-19 (NE+)
    		Below 1 Ω
    E19-1 (NE-) - E20-18 (NE-)
    		Below 1 Ω
    E23-19 (NE+) - E20-18 (NE-)
    		10 kΩ or higher
    E19-2 (NE+) or E20-19 (NE+) - Body ground
    		10 kΩ or higher
    E19-1 (NE-) or E20-18 (NE-) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK FOR INTERMITTENT PROBLEMS