Function
it tells the gear position to the control unit: in neutral or in gear.
Operating principle
for gear in neutral, the circuit is closed to ground connection: then, via CAN, the control unit sends the signal to the instrument panel which turns on the neutral speed warning light.
Level in wiring diagram: start-up enabling switches
Location:
- on the vehicle: left side of the vehicle, near flywheel cover
- connector: upper part of the flywheel cover
Electrical characteristics:
- gear in neutral: closed circuit (continuity)
- gear engaged: open circuit (infinite resistance)
Pin-out: 1. Voltage 12V
Caution! Before carrying out any troubleshooting, carefully read the general troubleshooting concepts for electrical devices at the beginning of the check and control section in the electrical system chapter.
Axone: statuses
Gear in neutral
Example value: yes/no
Axone: notes
Indication on the instrument panel always gear engaged: check the correct position of the cable terminals on the connector and the correct connection of the cables on the terminals. If they are not correct, restore the cable harness; if correct, disconnect the connector and, with gear in neutral, check continuity to terminal ground connection, sensor side: if there is no continuity, replace the sensor (after checking cable continuity on the sensor side and the correct mechanical position). If there is, check the correct position of the terminal on the control unit connector and the correct connection of the cables on the terminals. If they are not correct, restore the cable harness; if OK, check the cable continuity between the sensor connector and ENGINE connector PIN 16: if there is no continuity, restore the cable harness. If there is, replace the instrument panel if the vehicle performance is correct (the engine starts with gear in neutral but the neutral warning light is off) or replace the control unit if the vehicle performance is not correct (the engine does not start with gear in neutral).
Indication on the instrument panel always gear in neutral: disconnect the terminals from the sensor and check if there is continuity with ground connection at PIN toward the sensor, with gear engaged: if there is continuity, replace the sensor. If it is insulated from the ground connection, it means that the green/black cable from sensor PIN 1 to ENGINE connector PIN 16 is shorted to ground: restore the cable harness.