Kohler KG2204T

TP-6903 5/16a Electrical System and Sensor Troubleshooting 81
Action Yes No
 Turn the ECM power ON.
 Connect Spectrum to the ECM in data stream mode.
 Clear the diagnostic troubleshooting code (DTC).
 Start the engine.
Does DTC re-set?
Go to the next step.
Troubleshoot as an
intermittent problem.
 Check the electronic throttle for a foreign object in the throttle bore or
damaged throttle bore or fly assembly.
Did you find any damage or a foreign object in the bore?
Remove the foreign
object or replace the
throttle if damage is
found. Go to the last
step.
Go to the next step.
 Turn the ECM power OFF.
 Disconnect electronic throttle connector.
 Disconnect ECM wire harness connector.
 Inspect the electronic throttle connector and ECM wire harness
connector for damage, corrosion, or contamination.
Did you find a problem?
Correct the problem
as required. Go to the
last step.
Go to the next step.
 With the ECM power OFF, check for continuity between the
following:
o Sensor connector pin 1 and ECM connector P27 pin 104.
o Sensor connector pin 2 and ECM connector P26 pin 70.
o Sensor connector pin 3 and ECM connector P26 pin 40.
o Sensor connector pin 4 and ECM connector P27 pin 105.
o Sensor connector pin 5 and ECM connector P26 pin 15.
o Sensor connector pin 6 and ECM connector P26 pin 34.
Does the DVOM show continuity?
Go to the next step.
Repair the open circuit
as necessary.
 With the ECM power OFF, check for continuity between the
following:
o Sensor connector pin 1 and engine ground.
o Sensor connector pin 2 and engine ground.
o Sensor connector pin 3 and engine ground.
o Sensor connector pin 4 and engine ground.
o Sensor connector pin 5 and engine ground.
o Sensor connector pin 6 and engine ground.
Does the DVOM show continuity?
Repair the shorted
circuit to ground as
necessary.
Go to the next step.
 With the ECM power OFF, check for continuity between the
following:
o ECM connector P27 pin 104 and ECM connector P27 pin 112.
o ECM connector P27 pin 105 and ECM connector P27 pin 113.
o Sensor connector pin 1 and ECM connector P27 pin 112.
o Sensor connector pin 4 and ECM connector P27 pin 113.
Does the DVOM show continuity?
Repair the shorted
circuit to ground as
necessary.
Go to the next step.
 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 between the sensor connector pin 1 and engine
ground.
Does the DVOM show voltage?
Go to the next step.
Repair the shorted
circuit to voltage as
necessary.
 Turn the ECM power ON.
 Check for voltage between the following:
 Sensor connector pin 5 and engine ground.
 Sensor connector pin 6 and engine ground.
Does the DVOM show voltage?
Go to the next step.
Repair the shorted
circuit to voltage as
necessary.
 Replace the throttle. Refer to Section 5.1.
Is the replacement complete?
Go to the next step.