Dtc P0351/P0352 Cylinder 1 Or Cylinder 2 Ignition Coil Fault; Circuit Description - Briggs & Stratton VANGUARD M490000 Repair Manual

DTC P0351/P0352 CYLINDER 1 OR CYLINDER 2 IGNITION COIL FAULT

2

Circuit Description

Each ignition coil has an ignition (B+ voltage) and a
ground circuit. The ECM controls the ignition coil by
completing the ground circuit as needed.
The DTCs indicate which ignition coil is faulty. When
an ignition coil fault is set the ECM also shuts down the
fuel injector for the same cylinder. The engine continues
to run on one cylinder if no fault is set for the opposite
cylinder.
Diagnostic Aids
Check for the following conditions:
60
1. Poor ECM connection.
2. Inspect wire harness connectors for backed out
terminals, improper mating, broken locks, improperly
formed or damaged terminals, and poor terminal to
wire connection.
3. Damaged wire harness and/or connectors. If harness
appears to be OK, shake or wiggle wire harness
and/or connector with DVOM attached. Radical
voltage changes can indicate the location of the fault
condition.
4. Open fuse in fuse block.
Always clear DTCs after performing repairs.