Service Code Definitions

NOTE: CIRCUIT TESTS are grouped in the following categories.

A1-A3 Preliminary Tests
B1-B17 Input Sensor Tests
C1-C2 Fuel Control Systems
D1-D25 ECA Output Tests

SERVICE CODE DEFINITIONS

Code	Code Type	Definition
11	KOEO	System Pass
12	KOER	Unable to control RPM during Self-Test high RPM check
13	KOER	Unable to control RPM during Self-Test low RPM check
14	CONTINUOUS	PIP ckt failure
15	KOEO	ECA Read Only Memory (ROM) Test Failed
16	KOEO	IDM signal not received
18	KOER	SPOUT ckt open
19	KOE0	Failure in ECA internal voltage
21	KOER/KOEO	ECT sensor out of Self-Test Range
22	KOEO KOER	MAP/BP sensor input is out of Self-Test Range
23	KOEO/KOER	TP sensor input is out of Self-Test Range
24	KOER/KOEO	ACT sensor input is out of Self-Test Range
29	CONTINUOUS	Insufficient input from VSS
41	KOER	HEGO sensor ckt indicates lean
51	KOEO	ECT indicated -40°F/
52	KOEO	PSPS ckt is always open
53	KOEO & CONTINUOUS	TP sensor input is greater than maximum voltage
54	KOEO	ACT sensor -40°F ckt open
61	KOEO & CONTINUOUS	ECT indicated 254°F ckt grounded
63	KOEO & CONTINUOUS	TP sensor input is less than minimum voltage
64	KOEO & CONTINUOUS	ACT indicated 254°F ckt grounded
67	KOEO	Neutral Drive Switch (NDS) ckt open; A/C on
67	CONTINUOUS	Manual Lever Position (MLP) is out of range; A/C on (E4OD)
69	CONTINUOUS	3-4 shift error (E4OD)
72	KOER	Insufficient MAF or MAP change during Dynamic Response Test
73	KOER	Insufficient throttle position (TP) change during Dynamic Response Test
74	KOER	Brake ON/OFF (BOO) switch ckt failure (not activated during Self-Test)
77	KOER	Operator error during Dynamic Response/Cylinder Balance tests
85	KOEO	Canister Purge (CANP) ckt failure
86	KOEO	Shift Solenoid (SS) ckt failure
87	KOEO	Primary Fuel Pump ckt failure
89	KOEO	Converter Clutch Override (CCO) ckt failure
95	KOEO & CONTINUOUS	Fuel pump ckt open; ECA to motor ground
96	KOEO	Fuel pump ckt open; Battery to ECA
98	KOEO	Electronic Pressure Control (EPC) driver open in ECA (E4OD)