DESCRIPTOR DESCRIPTION (CONTINUED)
33 A/C CUT-OUT RELAY PROBLEM
Relay not turning on and off pro perly.
A/C CLUTCH RELAY CIRCUIT
Open or shorted circuit in A/C clutch relay circuit.
COMPUTER FAILURE SENSED
Computer failed upon entry into the diagnostic mode.
A/C PRESS SENSOR VOLT INPUT HIGH
A/C pressure sensor voltage is above the acceptable level.
33 cont.
A/C PRESS SENSOR VOLT INPUT LOW
A/C pressure sensor voltage is below the acceptable level.
A/C PRESS SENSOR NO 5V REFERENCE
Loss of a 5 volt feed to the A/C pressure sensor has been detected.
NO 5V TO MAP SENSOR
Loss of a 5 volt feed to the MAP sensor has been detected.
NO 5V TO TPS SENSOR
Loss of a 5 vo lt feed to the Throttle Position Sensor has been detected.
34 S/C SERVO
SOLENOID CKT
An open or shorted condition is detected in either of the speed control vacuum or vent solenoid control circuits.
STARTER RELAY CIRCUIT PROBLEM
Four consecutive startups with no starter relay actuation detected by computer.
EGR SOLENOID DRIVER CIRCUIT
Open or shorted condition detected in EGR solenoid circuit.
MUX S/C SWITCH VOLT INPUT HIGH
Speed control switch input above maximum acceptable voltage.
MUX S/C SWITCH VOLT INPUT LOW
Speed control switch input below minimum acceptable voltage.
EEC DTC
DISPLAY
DESCRIPTOR DESCRIPTION (CONTINUED)
IDLE SWITCH OPEN
Open circuit in Idle contact switch.
LOW SPEED FAN RELAY OPEN/SHORT
An open or short is detected in the control circuit of the low speed fan control relay.
LOW SPD FAN RLY CKT OPEN/SHORT
An open or short is detected in the control circuit of the high speed fan control relay.
HIGH SPEED FAN RELAY OPEN/SHORT
An open or short is detected in the control circuit of the high speed fan control relay.
HIGH SPD FAN 2 CKT OPEN/SHORT
An open or short is detected in the control circuit of the #2 high speed fan control r elay.
RADIATOR FAN RELAY CIRCUIT
An open or short is detected in the radiator fan control relay circuit.
This includes PWM solid state relays.
IDLE SWITCH SHORT
Idle contact switch input circuit shorted to ground.
HIGH SPEED FAN 3 CIRCUIT
An open or shorted condition detected in the control circuit of the #3 high speed fan relay.
36 AIR ASST SOL CKT
OPEN/SHORT CKT
Open or shorted condition detected in the air assist solenoid circuit.
36 cont.
WASTEGATE SOLENOID CKT
Short or open circuit in the wastegate solenoid circuit.
VNT-3 SOLENOID CIRCUIT
Open or short in VNT-3 solenoid circuit.
SECONDARY AIR SOLENOID CKT
The secondary air solenoid circuit is not in the expected state when requested by the PCM.
BOOST LIMIT EXCEEDED
MAP reading above over-boost limit detected during engine operation.
SECONDARY AIR SWITCHING CKT
An open or shorted condition in the secondary air (air switching/
aspirator) solenoid circuit.
SECONDARY AIR LOW FLOW
Insufficient flow of secondary air injection detected during aspirator test.
SECONDARY AIR HIGH FLOW
Excessive flow of secondary air injection detected during aspirator test.
37 EATX RPM PULSE PERFORMANCE
EATX RPM pulse generator signal for misfire detection does not correlate with expected value.
REV GEAR LOCKOUT CIRCUIT
Open or shorted condition detected in the transmission reverse gear lock-out solenoid circuit.
TRANSM. LOCKUP SOLENOID PROBLEM
Solenoid not turning on and off properly.
SHIFT LAMP DRIVER CIRCUIT
Open or shorted condition detected in torque converter part throttle unlock solenoid circuit.
TCC SOLENOID CKT (3ATX ONLY)
Open or short in torque converter clutch (part throttle unlock) solenoid circuit. Shift solenoid C electrical fault. Aisin transmission, or Trans Relay Circuit in JTEC RE Transmissions.
BARO READ SOLENOID FAILURE
Open or short in the BARO read solenoid circuit.
2-3 GEAR LOCKOUT CIRCUIT
An open or short is detected in the transmission 2-3 gear lock-out solenoid control circuit.
TRANS TEMP SNSR VOLT LOW
Trans temperature sensor voltage goes below the acceptable voltage.
TRANS TEMP SNSR VOLT HIGH
Trans temperature sensor voltage goes above the acceptable voltage.
PARK/NEUTRAL SWITCH CIRCUIT
Incorrect input state detected for the Park/Neutral switch.
OVERDRIVE SOLENOID DRIVER
An open or shorted condition detected in the overdrive solenoid circuit or Trans Relay Circuit in JTEC RE transmissions.
GOV MID PRESSURE MALFUNCTION
Requested and actual pressure are out of tolerance band for the
Governor Control System used to regulate governor pressure to control shifts. (Mid Pressure Malfunction)
EEC DTC
DISPLAY
DESCRIPTOR DESCRIPTION (CONTINUED)
NO RPM DROP torque convertor clutch lock-up system (TCC/PTU sol, TC switch valve, fluid level, etc.)
3-4 SHIFT MALFUNCTION
The overdrive solenoid is unable to engage the gear change from 3rd gear to the overdrive gear.
GOV PRESSURE SOLENOID CKT
An open or shorted condition detected in the governor Pressure Solenoid circuit or Trans Relay Circuit in JTEC RE transmissions.
TRANS VOLTAGE RELAY CIRCUIT
An open or shorted condition is detected in the Transmission Relay circuit. This relay supplies power to the TCC, Overdrive, and Governor Pressure solenoids.
SHIFT SOLENOID A CIRCUIT MALF
Shift solenoid A (1-2/3-4) functional fault- Aisin transmission.
TRANS RANGE SENSOR
Range sensor—Aisin transmission.
1-2/3-4 SHIFT SOL CIRCUIT MALF
Shift solenoid A electrical fault—Aisin transmission.
2-3 SHIFT SOL CIRCUIT MALF
Shift solenoid B electrical fault—Aisin transmission.
REV GEAR LOCKOUT CIRCUIT
An open or shorted condition detected in the transmission reverse gear lock-out solenoid circuit.
41 CHARGING SYSTEM
PROBLEM
Switched battery voltage from ASD relay below acceptable range.
ALTERNATOR FIELD CONTROL CIRCUIT
Field control interface not switching properly
ALTERNATOR FIELD CONTROL CIRCUIT
Open or short in Alternator Field Control circuit.
STARTER RELAY CKT OPEN/SHORT
An open or short is detected in the starter relay control circuit.
42 ASD RELAY
CIRCUIT
Switched voltage from ASD during cranking is not present within 1/3 second after first injector ON signal.
Engine stalls if switched battery voltage from ASD is present more than 3 seconds from last injector signal.
Open or shorted auto shutdown relay circuit (primary side).
An open or shorted condition detected in the ASD or CNG shutoff relay control.
Z1 VOLTAGE SENSE Z1 voltage absent when auto shutdown relay is energized.
ASD RELAY NO VOLT AT PCM
No output voltage is detected when the auto shutdown relay is energized.
42 cont.
FUEL LEVEL SNSR VOLTAGE LOW
Fuel level sensor signal goes below the acceptable voltage level.
FUEL LEVEL SNSR VOLTAGE HIGH
Fuel level sensor signal goes above the acceptable voltage level.
FUEL PUMP RELAY CKT OPEN/SHORT
An open or short is detected in the fuel pump relay control circuit.
FUEL LEVEL SNSR NO VOLT CHANGE
During low fuel, no change in fuel level has been seen for a set n umber of miles.
Fuel level signal does not change a calibrated amount over a calculated number of miles.
43 IGN COIL CIRCUIT
OVERCURRENT
A coil (1-5) is drawing too much current.
IGNITION & FUEL INTERFACE ERROR
Either ignition or fuel signal not present between logic module and power module; OR injector OFF signal is shorted.
IGNITION CONTROL CIRCUIT
Spark control interface not switching pr operly.
Output driver stage for ignition coil does not respond to the dwell control signal.
IGNITION COIL X CIRCUIT
Peak primary circuit current not reached with maximum dwell time. X
= 1-8.
MULTIPLE CYL MISFIRE
Misfire detected in multiple cylinders.
NBF SENSOR NO TIMING SIGNAL
No fuel injector timing pulses detected during engine cranking.
CYLINDER x MISFIRE
Misfire detected in cylinder #x. x= 1-10.
IGN COIL CIRCUIT OVERCURRENT
A coil (1-5) is drawing too much current.
44 LOGIC MODULE
WRONG PROM
Wrong prom installed in logic module.
LOSS OF FUSED J2 TO LOGIC BOARD
Fused J2 (FJ2) not present in SMEC.
BATTERY TEMP SENSOR CIRCUIT
Signal from battery temperature sensor is above or below acceptable voltage.
AAT SENSOR VOLTAGE LOW
Battery (ambient) temperature sensor input below acceptable voltage.
AAT SENSOR VOLTAGE HIGH
Battery (ambient) temperature sensor input above acceptable voltage.
AAT Ambient/Battery temperature sensor input v oltage out of an acceptable
EEC DTC
DISPLAY
DESCRIPTOR DESCRIPTION (CONTINUED)
TRAN TEMP SENSOR VOLTAGE LOW
Transmission fluid temperature sensor input below acceptable voltage.
TRAN TEMP SENSOR VOLTAGE HIGH
Transmission fluid temperature sensor input above acceptable voltage.
EATX DTC PRESENT
Indicates that there is an active DTC in the transmission controller that has illuminated the MIL.
PARK/NEUTRAL SWITCH CIRCUIT
Incorrect input state detected for the Park/Neutral switch.
TRANS TEMP SNSR CIRCUIT
Relationship between transmission temperature and overdrive operation and/or TCC operation indicates a failure of the Transmission
Temperature Sensor.
GOV PRESS SENSOR VOLTAGE LOW
The Governor Pressure Sensor input is below an acceptable voltage level.
GOV PRESS SENSOR VOLTAGE HIGH
The Governor Pressure Sensor input is above an acceptable voltage level.
GOV PRESSURE SENSOR OFFSET
The Governor Pressure Sensor input is greater than or less than a calibration limit for 3 consecutive park/neutral calibrations.
OVERDRIVE SWITCH LOW
Overdrive override switch input is in a prolonged depressed state.
46 BATTERY VOLTAGE
LOW
Battery voltage more than 1 volt below desired voltage.
BATTERY VOLTAGE HIGH
Battery voltage more than 1 volt above desired voltage.
CHARGING SYSTEM VOLTAGE HIGH
Battery voltage sense input is above target charging voltage during engine operation.
47 BATTERY VOLTAGE
LOW
Battery voltage more than 1 volt below desired voltage.
BATTERY VOLTAGE HIGH
Battery voltage more than 1 volt above desired voltage.
CHARGING SYSTEM VOLTAGE LOW
Battery voltage sense input is detected as b eing below target charging voltage during engine operation. No significant change in voltage is detected during active test of alternator output.
51 O2 FEEDBACK
CIRCUIT PROBLEM
O2 sensor indicates lean condition for longer than acceptable time.
BARO OUT OF RANGE
MAP Sensor input voltage not within an acceptable range during reading of Barometric pressure.
51 cont.
EXCESSIVE ENRICHMENT
O2 sensor indicates a rich fuel/air condition.
LEAN CONDITION BANK 2
A sustained lean fuel/air ratio in bank #2 exceeds the acceptable range of the adaptive fuel control.
FUEL SYSTEM 1/1 LEAN CONDITION
A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
FUEL SYSTEM 2/1 LEAN CONDITION
A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
AFR LEAN CONDITION
Right front 02 sensor indicates sustained lean condition during engine operation.
O2 2/1 SUSTAINED RICH CONDITION
Oxygen sensor 2/1 input indicates sustained rich condition during engine operation.
O2 1/1 SUSTAINED RICH CONDITION
Oxygen sensor 1/1 input indicates sustained rich condition during engine operation.
UPSTREAM O2S 2/1 LEAN CONDITION
Oxygen sensor 2/1 input indicates sustained lean condition during engine operation.
UPSTREAM O2S 1/1 LEAN CONDITION
Oxygen sensor 1/1 input indicates sustained lean condition during engine operation.
LEAN CONDITION BANK 1
A sustained lean fuel/air ratio exceeds the range of authority of the adaptive fuel control (bank 1).
LEAN CONDITION DURING WOT
A prolonged lean condition is detected during Wide Open Throttle, indicating possible fuel starvation due to a plugged fuel filter, or a blocked fuel inlet sock.
52 LOGIC MODULE
MPU/ROM FAILURE
Failure in logic module indicated.
EXCESSIVE FUEL VALVE LEANING
Adaptive fuel value leaned excessively due to sustained rich condition.
WASTEGATE 2