Contour L4-122 2.0L DOHC VIN 3 SFI (1995)
Code 541 - 550: Testing and Inspection
NOTE
KOEO refers to Key On Engine Off (KOEO)
KOER refers to Key On Engine Running (KOER)
DTC refers to Diagnostic Trouble Code (DTC)
DTCs should be diagnosed in the order they are received.
DTC 529
Data Communication Link or Powertrain Control Module circuit failure.
KOEO Memory Code ............................................................................................................................................................................ Go to ML25
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/ML - Self-Test Output/Malfunction Indicator
Lamp/ML25 - Continuous Code 529, "Check Engine"/"Check DCL"
DTC 532
Cluster Control Assembly circuit failure.
KOEO Memory Code ............................................................................................................................................................................ Go to ML25
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/ML - Self-Test Output/Malfunction Indicator
Lamp/ML25 - Continuous Code 529, "Check Engine"/"Check DCL"
DTC 533
Data Communication Link or Electronic Instrument Cluster circuit failure.
KOEO Memory Code ............................................................................................................................................................................ Go to ML25
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/ML - Self-Test Output/Malfunction Indicator
Lamp/ML25 - Continuous Code 529, "Check Engine"/"Check DCL"
DTC 536
Brake On/Off circuit failure or not actuated during KOER self-test.
KOER Hard Code ..................................................................................................................................................................................... Go to FD1
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/FD - Brake On/Off (BOO) Switch/FD1 -
Verify Brake Was Pressed
KOEO Memory Code ............................................................................................................................................................................. Go to FD90
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/FD - Brake On/Off (BOO) Switch/FD90 -
Check For Proper Stoplamp Switch Installation
DTC 538
-
Insufficient RPM change during KOER dynamic response test.
-
Invalid cylinder balance test due to throttle movement during test.
-
Invalid cylinder balance test due to cylinder identification circuit failure.
KOER Hard Code ...................................................................................................................................................................................... Go to M1
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/M - Dynamic Response Test/M1 - System
Failed to Recognize Brief WOT
DTC 539
A/C or defrost "ON" during Self-Test.
KOEO Hard Code ................................................................................................................................................................................. Go to KM40
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/KM - WOT A/C Cut-Off (WAC) A/C
Demand/KM40 - Check A/C Input
KOER Hard Code .................................................................................................................................................................................. Go to KM40
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/KM - WOT A/C Cut-Off (WAC) A/C
Demand/KM40 - Check A/C Input
DTC 542
Fuel pump secondary circuit failure.
KOEO Hard Code ...................................................................................................................................................................................... Go to J10
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinpoint Tests/J - Fuel Pump Circuit/J10 - Does Engine
Start