Kohler KG2204 Service page 74

Action
 Turn the ECM power ON.
 Connect Spectrum in system Data Mode.
 Crank the engine.
Does the DTC reset?
 Turn the ECM power OFF.
 Disconnect the ignition module connector.
 Disconnect the ECM connector.
 Using a DVOM, check for continuity between the following:
o The ignition connector pin 1 and ECM connector P27 pin 116.
o The ignition connector pin 2 and ECM connector P27 pin 117.
Does the DVOM show continuity?
 Using a DVOM, check for continuity between the following:
o The ignition connector pin 1 and engine ground.
o The ignition connector pin 2 and engine ground.
Does the DVOM show continuity?
 Connect the wire harness to the ECM.
 Turn off the fuel supply and disconnect the power leads to the fuel
shut-off valves to prevent fuel from inadvertently entering the intake
manifold.
 Turn the ECM power ON.
 Check for voltage on connector pins 3 and 4.
 Does the DVOM show voltage?
 Replace the ignition module. Refer to Section 5.8.
Is the replacement complete?
 Remove all test equipment except Spectrum.
 Connect any disconnected components.
 Using Spectrum, clear DTC information from the ECM.
 Turn the ECM power OFF and wait 30 seconds.
 Start the engine and operate to full operating temperature.
 Observe the engine performance.
 After operating the engine, check for any stored codes.
Does the engine operate normally with no stored codes?
 Replace the ECM. Refer to Section 5.4.
Is the replacement complete?
 Remove all test equipment except Spectrum.
 Connect any disconnected components.
 Using Spectrum, clear DTC information from the ECM.
 Turn the ECM power OFF and wait 30 seconds.
 Start the engine and operate to full operating temperature.
 Observe the engine performance.
 After operating the engine, check for any stored codes.
Does the engine operate normally with no stored codes?
Figure 4-19 Ignition Coil Troubleshooting
74 Electrical System and Sensor Troubleshooting
Yes No
Troubleshoot as an
Go to the next step.
intermittent problem.
Repair the open circuit
Go to the next step.
as necessary.
Repair the shorted
Go to the next step.
circuit.
Repair the open circuit
Go to the next step.
as necessary.
Go to the next step.
System OK. Go to the next step.
Go to the next step.
Restart the ignition coil
troubleshooting
System OK. procedure. Look for
other DTC codes
stored in the ECM.
TP-6903 5/16a