Kohler KG2204 Service page 31

P-Code SPN FMI
P0642 3509 4
P0643 3509 3
P0646 876 4
P0647 876 3
P0650 1213 31
P0652 3510 4
P0653 3510 3
P0654 836 31
P0655 623 31
TP-6903 5/16a
Description
Sensor Reference
Voltage A Circuit Low
Sensor Reference
Voltage A Circuit High
A/C Clutch Relay
Control Circuit Low
A/C Clutch Relay
Control Circuit High
Malfunction Indicator
Lamp (MIL) Control
Circuit
Sensor Reference
Voltage B Circuit Low
Sensor Reference
Voltage B Circuit High
Engine RPM Output
Circuit
Overheat Lamp Circuit
Possible Cause
 Problem with 5 V
sensor power supply
circuit. Power supply
is less than 4.6 V.
 Problem with 5 V
sensor power supply
circuit. Power supply
is above 5.4 V.
 Not applicable
 Not applicable
 Not applicable
 Problem with 5 V
sensor power supply
circuit. Power supply
is less than 4.6 V.
 Problem with 5 V
sensor power supply
circuit. Power supply
is above 5.4 V.
 Not applicable
 Not applicable
Corrective Action
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for sensor power supply
circuit shorts to ground.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage falls
when a sensor is added, replace
that sensor. Refer to Section 5.
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for a short circuit to battery
voltage or open circuit in sensor
ground wire.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage rises
when a sensor is added, replace
that sensor. Refer to Section 5.
 Not applicable
 Not applicable
 Not applicable
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for sensor power supply
circuit shorts to ground.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage falls
when a sensor is added, replace
that sensor. Refer to Section 5.
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for a short circuit to battery
voltage or open circuit in sensor
ground wire.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage rises
when a sensor is added, replace
that sensor. Refer to Section 5.
 Not applicable
 Not applicable
Diagnostic Troubleshooting Codes 31