2/45771, 2/45772

Fault codes 2/45771, 2/45772





Malfunction indicated
Signal from throttle position sensor (LH 2.4.2) or throttle position switch (2.4) absent or faulty.

Fault symptom
Idle control not working properly.
CHECK ENGINE lamp alight.

Test procedure (LH 2.4.2)

1 With the ignition switch in the Drive position, enter command code 279 on the ISAT.

The following throttle openings should be shown on the display:
- with the accelerator floored: 80085 = approx. 85 degrees (open)
- with the accelerator untouched: 80000 approx. 0 degrees (closed)

2 Measure the resistance across pins 1 and 3 of the throttle position sensor.

The correct resistance is as follows:
- with the accelerator floored: approx. 1.1 - 1.5 kilo Ohms
- with the accelerator untouched: approx. 2.6 - 3.0 kilo Ohms

If the resistance is not correct, fit a new throttle position sensor.

3 With the ignition switch in the Drive position, measure the voltage on pin 1 of the throttle position sensor's connector.

It should be 5 V.

If it is not, check the GN/RD lead between pin 1 of the throttle position sensor's connector and pin 10 of the control module for continuity/shorting.




4 With the ignition switched off, check that pin 2 of the throttle position sensor's connector is properly grounded. If it is not, check the BK/WH lead between this pin and ground for continuity/shorting.

5 With the control module connected and with the ignition switch in the Drive position, check the voltage across pin 2 of the control module and ground.

It should be:

- accelerator untouched (idling): approx. 0.2 V
- accelerator floored: approx. 4 V

If it is not, check the GY lead between pin 3 of the throttle position sensor's connector and pin 2 of the control module for continuity/shorting.

6 Try a new control module.