Diagnostic Trouble Code (DTC) Identification

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

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.
13	MAP PNEUMATIC CHANGE	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.
14	MAP VOLTAGE TOO HIGH	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 Temp. Stays Below Normal Operating Temperature During Vehicle Operation.
18	OXYGEN SENSOR SIGNAL	No Rich Or Lean Signal Is Detected From O(2) Sensor Input.
22	COOLANT VOLTAGE LOW	Coolant Temp. Sensor Input Below Minimum Acceptable Voltage.
22	COOLANT VOLTAGE HIGH	Coolant Temp. Sensor Input Above Maximum Acceptable Voltage.
23	T/B TEMP VOLTAGE LOW	Throttle Body Temperature Sensor Input More/Less Than Maximum/Minimum Acceptable Voltage.
23	T/B TEMP VOLTAGE HIGH	Throttle Body Temperature Sensor Input More/Less Than Maximum/Minimum Acceptable Voltage.
24	TPS VOLTAGE LOW	TPS Sensor Output Less Than Minimum Acceptable Voltage.
24	TPS VOLTAGE HIGH	TPS Sensor Output More Than Maximum Acceptable Voltage.
25	AIS MOTOR CIRCUITS	Shorted Condition Detected In One Or More AIS Control Circuits.
26	INJ 1 PEAK CURRENT	High Resistance Detected In Injector Output Circuit.
27	INJ 1 CONTROL CIRCUIT	Injector 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.
32	EGR SOLENOID CIRCUIT	Open Or Short Is Detected In EGR Solenoid Circuit (CA Only).
32	EGR SYSTEM FAILURE	SMEC Did Not Detect Required Air/Fuel Change During Diagnostic Test (CA Only).
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 Vacuum Or Vent Solenoid Circuits.
35	RADIATOR FAN RELAY	Open Or Shorted Condition Detected In Radiator Fan Relay Circuit.
37	PTU SOLENOID CIRCUIT	Open Or Shorted Condition Detected In Torque Converter Part Throttle Unlock Solenoid Circuit.
41	CHARGING SYSTEM CKT	Output Driver Stage Does Not Respond Correctly To Voltage Regulator Control Signal.
42	ASD RELAY CIRCUIT	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	LEAN F/A CONDITION	Oxygen Sensor Input Indicates Lean Air/Fuel Ratio During Engine Operation.
52	RICH F/A CONDITION or EXCESSIVE LEANING	Oxygen Sensor Input Indicates Rich Air/Fuel Ratio During Engine Operation. Adaptive Fuel Value Leaned Excessively From A Sustained Rich Condition.
53	INTERNAL SELF-TEST	SMEC Detects Internal Failure.
55	N/A	Completion Of Fault Code Display By Check Engine Light.
62	EMR MILEAGE ACCUM	Attempt Is Unsuccessful To Update EMR Mileage In SMEC EEPROM (Truck Only).
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.