PSG16 / P0642 03
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Performance loss.
Cruise control not working.
Voltage Supply Group 1. Short to Ground.
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Performance loss.
Cruise control not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| Voltage is lower than 4,6 V for more than 0,2 s. |
System reaction to a fault:
| Limp Home, engine torque limitation. |
| Cruise control switched off. |
OK report:
| Fault criteria NOT fulfilled for 0.2 s. |
Checking the wiring harness
| • | Faults in the control module female connector can be the cause of the DTC. Check the connector with respect to oxidation, depressed pins and pin clamping force. |
| • | Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force. |
Diagnostic help
Diagnosis regards:
Functions in the diagnostic tool related to the fault:
| Intake air temperature sensor |
| (See also description of readings/activations in diagnostic tool) |
