Ignition discharge module: Diagnostics: Notes

• If there is an open circuit in the power supply to the ignition discharge module, the voltage on all the trigger leads will be 0V and diagnostic trouble code P1310  will be generated.
• If there is an open circuit on an individual trigger lead, diagnostic trouble codes will not be generated.

Combustion signals

If there is an open circuit on both leads to control module pins 53 and 6, the ignition and injection will not be synchronized. Knock detection will then take place in parallel on cylinders 1+4 and cylinders 2+3.

• If there is an open circuit to control module pin 53, diagnostic trouble code P1312  will be generated.
• If there is an open circuit to control module pin 6, diagnostic trouble code P1334  will be generated.
• If the ignition cannot be synchronized to the camshaft position, diagnostic trouble code P0340  will be generated.