Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

CODE	DISPLAY ON DRB-II	FAULT CONDITION
11	IGN REFERENCE SIGNAL	No distributor reference signal picked up during cranking.
12	Number of key-ons since last fault or since faults were erased.	Direct battery input to SMEC was disconnected within last 50-100 ignition key-ons.
13	MAP PNEUMATIC SIGNAL	No difference in MAP sensor signal is detected. No difference is detected between map reading and stored barometric pressure reading
13	MAP PNEUMATIC CHANGE	No difference in MAP sensor signal is detected. No difference is detected between map reading and stored barometric pressure reading
14	MAP VOLTAGE TOO LOW	MAP sensor input less than minimum acceptable voltage. MAP sensor input more than maximum acceptable voltage.
14	MAP VOLTAGE TOO HIGH	MAP sensor input less than minimum acceptable voltage. MAP sensor input more than maximum acceptable voltage.
15	VEHICLE SPEED SIGNAL	No distance sensor signal detected with road load conditions.
16	BATTERY INPUT SENSE	Battery voltage sense input not detected with engine running.
17	LOW ENGINE TEMP	Coolant temperature stays below normal operating temperature during vehicle operation.
21	OXYGEN SENSOR SIGNAL	No rich or lean signal is detected from O2 sensor input.
22	COOLANT VOLTAGE LOW	Coolant temp. sensor input below minimum acceptable voltage. Coolant temp. sensor input maximum acceptable voltage.
22	COOLANT VOLTAGE HIGH	Coolant temp. sensor input below minimum acceptable voltage. Coolant temp. sensor input maximum acceptable voltage.
24	TPS VOLTAGE LOW	TPS sensor output less than minimum acceptable voltage. TPS sensor output more than maximum acceptable voltage.
24	TPS VOLTAGE HIGH	TPS sensor output less than minimum acceptable voltage. TPS sensor output more than maximum acceptable voltage.
25	AIS MOTOR CIRCUITS	Shorted condition detected in one or more AIS controls circuits.
26	INJ 1 PEAK CURRENT	High resistance detected in injector 1 output circuit.
26	INJ 2 PEAK CURRENT	High resistance detected in injector 2 output circuit.
26	INJ 3 PEAK CURRENT	High resistance detected in injector 3 output circuit.
27	INJ 1 CONTROL CIRCUIT	Injector 1 output driver stage does not respond correctly to SMEC control signal.
27	INJ 2 CONTROL CIRCUIT	Injector 2 output driver stage does not respond correctly to SMEC control signal.
27	INJ 3 CONTROL CIRCUIT	Injector 3 output driver stage does not respond correctly to SMEC control signal.
31	PURGE SOLENOID CKT	Open or shorted condition is detected in purge solenoid circuit.
33	A/C CLUTCH RELAY CKT	Open or shorted condition detected in A/C clutch relay circuit.
34	S/C SERVO SOLENOIDS	Open or shorted condition detected in speed control vacum or vent solenoid circuits.
35	RADIATOR FAN RELAY	Open or shorted condition detected in radiator fan relay circuit.
41	CHARGING SYSTEM CKT	Output driver stage does not respond correctly to voltage regulator control signal.
42	ASD RELAY CIRCUIT or Z1 VOLTAGE SENSE	Open or shorted condition detected in ASD relay circuit.
43	IGNITION CONTROL CIRCUIT	Output driver stage for ignition coil does not respond properly to dwell control signal.
44	FJ2 VOLTAGE SENSE	No FJ2 voltage present at logic board during SMEC operation.
46	BATTERY VOLTAGE HIGH	Battery voltage sense input more than target charging voltage during engine operation.
47	BATTERY VOLTAGE LOW	Battery voltage sense input less than target charging voltage during engine operation.
51	AIR FUEL AT LIMIT	Oxygen sensor input indicates lean air/fuel ratio during engine operation.
52	AIR FUEL AT LIMIT	Oxygen sensor input indicates rich air/fuel ratio during engine operation.
53	INTERNAL SELF-TEST	SMEC detects internal failure.
54	SYNC PICK-UP SIGNAL	No high data rate detected during engine rotation.
55	.....	Completion of fault code display by check engine light.
62	EMR MILEAGE ACCUM	Attempt is unsuccessful to update EMR mileage in SMEC EEPROM.
63	EEPROM WRITE DENIED	Attempt is unsuccessful to write to an EEPROM location by SMEC.
N/A	FAULT CODE ERROR	DRB-II does not recognize fault identification.