300zx ECU Codes
Rather than removing the floorboard, it is possible to use a paperclip to jump two pins on the consult connector (located by the hood release pull) to enter diagnostics mode. For practical purposes, shorting these connectors is the same as turning the potentiometer on the ECU. Codes can be read from the Check Engine Light.
Located just above the Hood Release Pull.
|
This image shows which pins to short. Insert a jumper, hold for three seconds, and then remove it.
|
The long flashes are the first digit, and the short flashes are the second digit.
Look at the following list to determine the code(s).
11: crank angle sensor circuit
12*: air flow meter circuit
13*: engine coolant temp. Sensor circuit
14*: vehicle speed sensor circuit
21: ignition signal circuit
26*: boost pressure sensor
31*: ECU
32*: EGR function
33*: exhaust gas sensor circuit (left)
34: detonation sensor circuit
35*: exhaust gas temp. Sensor circuit
42: fuel temp. Sensor circuit
43*: throttle position sensor circuit
45*: injector leak
51*: injector circuit
53*: exhaust gas sensor circuit (right)
54: signal circuit from A/T control to ECU
55: NO malfunctions in the above
* indicates that the "Check Engine" light will come on under normal driving.
Look at the following list to determine the code(s).
11: crank angle sensor circuit
12*: air flow meter circuit
13*: engine coolant temp. Sensor circuit
14*: vehicle speed sensor circuit
21: ignition signal circuit
26*: boost pressure sensor
31*: ECU
32*: EGR function
33*: exhaust gas sensor circuit (left)
34: detonation sensor circuit
35*: exhaust gas temp. Sensor circuit
42: fuel temp. Sensor circuit
43*: throttle position sensor circuit
45*: injector leak
51*: injector circuit
53*: exhaust gas sensor circuit (right)
54: signal circuit from A/T control to ECU
55: NO malfunctions in the above
* indicates that the "Check Engine" light will come on under normal driving.
