Test TC-1A - Checking System For Trouble Codes

NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY . For wiring diagrams, see WIRING DIAGRAMS section.

NOTE: Battery must be fully charged before proceeding.

Battery must be fully charged before proceeding. Attempt to start engine. If engine will not start, crank engine for at least 10 seconds. Connect DRB to engine diagnostic connector. Record DRB trouble codes.
If DRB has a blank screen or displays an error message, this indicates a DRB failure. To diagnose and correct these conditions, see VEHICLE COMMUNICATIONS.
If DRB displays NO RESPONSE, go to TEST NS-6A . If trouble codes are displayed, see DRB TROUBLE CODES table. If no trouble codes are displayed and a driveability problem is present, go to TEST NTC-1A . If no trouble codes are displayed and a no-start problem is present, go to TEST NS-1A .

DRB TROUBLE CODES

DTC

DRB Message

Test No.

Code 11

NO CRANK REFERENCE SIGNAL AT PCM

TC-2A

Code 54

NO CAM SYNC SIGNAL AT PCM

TC-3A

Code 13

NO CHANGE IN MAP FROM START TO RUN

TC-4A

Code 14

MAP SENSOR VOLTAGE TOO LOW

TC-5A

Code 14

MAP SENSOR VOLTAGE TOO HIGH

TC-6A

Code 15

NO VEHICLE SPEED SENSOR SIGNAL

TC-7A

Code 21

O2S STAYS AT CENTER

TC-8A

Code 52

O2S STAYS ABOVE CENTER (RICH)

TC-9A

Code 51

O2S STAYS BELOW CENTER (LEAN)

TC-10A

Code 21

O2S SHORTED TO VOLTAGE

TC-11A

Code 22

ECT SENSOR VOLTAGE TOO LOW

TC-12A

Code 22

ECT SENSOR VOLTAGE TOO HIGH

TC-13A

Code 24

THROTTLE POSITION SENSOR VOLTAGE LOW

TC-14A

Code 24

THROTTLE POSITION SENSOR VOLTAGE HIGH

TC-15A

Code 25

IDLE AIR CONTROL MOTOR CIRCUITS

TC-16A

Code 27

INJECTOR CONTROL CIRCUIT

TC-17A

Code 62

PCM FAILURE SRI MILE NOT STORED

TC-23A

Code 63

PCM FAILURE EEPROM WRITE DENIED

TC-23A

Code 32

EGR SYSTEM FAILURE

TC-24A

Code 32

EGR SOLENOID CIRCUIT

TC-25A

Code 31

EVAP SOLENOID CIRCUIT

TC-26A

Code 37

TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT

TC-27A

Code 42

NO ASD RELAY VOLT SENSED AT PCM

TC-28A

Code 42

AUTO SHUTDOWN RELAY CONTROL CIRCUIT

TC-29A

Code 33

A/C CLUTCH RELAY CIRCUIT

TC-30A

Code 35

RADIATOR FAN RELAY CIRCUIT

TC-31A

Code 44

BATTERY TEMP SENSOR VOLTS OUT OF LIMIT

TC-38A

Code 17

ENGINE IS COLD TOO LONG

⁽¹⁾ *

Code 53

INTERNAL PCM FAILURE

⁽²⁾ *

Code 41

GENERATOR FIELD NOT SWITCHING PROPERLY

⁽³⁾ *

Code 47

CHARGING SYSTEM VOLTAGE TOO LOW

⁽³⁾ *

Code 46

CHARGING SYSTEM VOLTAGE TOO HIGH

⁽³⁾ *

Code 34

SPEED CONTROL SOLENOID CIRCUITS

⁽⁴⁾ *

⁽¹⁾	If engine temperature does not reach 176°F (80°C) after 20 minutes of driving, check cooling system. This code may also set in error during very cold slow speed driving.

⁽²⁾	Replace Powertrain Control Module (PCM) and perform TEST VER-1.

⁽³⁾	Refer to appropriate ALTERNATORS & REGULATORS article in ELECTRICAL section.

⁽⁴⁾	Refer to appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT section.