PSG16 / P0670 04

Read the instructions below then start the fault diagnostic procedure.

Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)

P0670 04

Fault symptom

Fault indicator lamp (for further information see WIS Fault diagnosis, general)

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Output NOT activated.

Fault criteria:

No voltage on the control module output for more than 0.6 s

System reaction to a fault:

None

OK report:

Fault criteria NOT fulfilled for 0.6 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

Data link from glow plug control module should switch high/low inversely to activation lead from PSG 16 to glow plug control module.