556-568
NOTEKOEO 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 556
Fuel pump relay primary circuit failure.
KOEO Hard Code Go to X70
X70 - Code 556 or 557: Check Fuel Pump Relay Coil Resistance
KOEO Memory Code Go to X115
X115 - Continuous Code 556/557: Check EEC-IV Harness
KOEO Memory Code Go to X115
X115 - Continuous Code 556/557: Check EEC-IV Harness
DTC 557
Low speed fuel pump primary circuit failure.
KOEO Hard Code Go to X70
X70 - Code 556 or 557: Check Fuel Pump Relay Coil Resistance
KOEO Memory Code Go to X115
X115 - Continuous Code 556/557: Check EEC-IV Harness
DTC 558
Exhaust gas recirculation valve vacuum regulator circuit failure during KOEO self-test.
KOEO Hard Code Go to DL11
DL11 - Measure EVR Solenoid Resistance
DTC 559
Air Conditioning On relay circuit failure during KOEO self-test.
KOEO Hard Code Go to KM60
KM60 - Code 559: Check For IGN Run Voltage to A/C Relay
DTC 562
Pusher fan control primary circuit failure.
KOEO Hard Code Go to X10
X10 - Check For VPWR to Pusher Fan Control Relay
DTC 563
High Fan Control (HFC) circuit failure during KOEO self-test.
KOEO Hard Code Go to X15
X15 - Code 563: Check High Fan Control (HFC) Circuit In CCRM
DTC 564
Fan Control (FC) circuit failure during KOEO self-test.
KOEO Hard Code Go to X20
X20 - Does Fan Run With Key On
DTC 565
Canister Purge circuit failure during KOEO self-test.
KOEO Hard Code Go to KD6
KD6 - Check CANP Solenoid Resistance
DTC 566
3-4 shift solenoid circuit failure during KOEO self-test.
KOEO Hard Code Go to TC1
TC1 - Enter Output State Diagnostic Test Mode
DTC 567
Speed Control Vent (SCVNT) circuit failure.
Refer to Ignition System / Testing and Inspection.
DTC 568
Speed Control Vacuum (SCVAC) circuit failure.
Refer to Ignition System / Testing and Inspection.