User Manual

Retrieving Codes
FAULT CODE DEFINITIONS FOR EEC-IV SYSTEMS (79 - 89)
Chapter 4 54
TEST
CODE CONDITION FAULT CODE DEFINITION
79 - (Trucks ONLY): Air conditioner on while
performing test
81 O Air diverter solenoid fault, intake air
control circuit fault / air injection diverter
82 O Air diverter solenoid circuit fault or
supercharger bypass circuit fault
82 O Integrated relay control module
83 O EGR solenoid circuit fault (2.3L MAP)
83 O (Cars ONLY): Cooling fan circuit fault
83 O, C (Cars ONLY): Low speed fuel pump relay
circuit fault, circuit open (3.0L MAF-SFI)
83 O EVP/EGRC/EGRV
84 O, R (Cars ONLY): EGR vacuum regulator
circuit failure
84 O (Trucks ONLY): EGR vent fault
85 O, R (Cars ONLY): Canister Purge Solenoid
circuit failure
85 C (Cars ONLY): Adaptive fuel limit reached -
lean
85 O (Trucks ONLY): Canister purge circuit
failure
85 O Shift solenoid 3/4 - 4/3
86 O Adaptive fuel limit reached or 3-4 shift
solenoid circuit failure
86 C (Cars ONLY): Adaptive fuel limit reached -
rich
87 O, R, C (Cars ONLY): Fuel pump primary circuit
fault
87 O (Trucks ONLY): Primary fuel pump circuit
failure
88 O (Cars ONLY): Cooling fan circuit fault
88 O (Trucks ONLY): Choke relay out of range
88 C Dual plug input control failure
88 O Shift solenoid 3/4 - 4/3
89 O AXOD Lock-Up Solenoid (LUS) circuit
failure or Clutch Converter Override (CCO)
circuit failure
4