LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Engine Controls - Tests W/Codes - 5.9L Gasoline) >> Self-Diagnostic Tests >> Test TC-1A - Checking System For Trouble Codes >> Notes

Test TC-1A - Checking System For Trouble Codes: Notes

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagram, see WIRING DIAGRAMS  section at the end of this article.
NOTE: Battery must be fully charged before proceeding.
  1. Battery must be fully charged before proceeding. Attempt to start engine. If engine will not start, crank engine for at least 10 seconds. Connect scan tool to engine diagnostic connector. Record scan tool trouble codes.
  2. If scan tool has a blank screen or displays an error message, this indicates a scan tool failure. To diagnose and correct these conditions, see SELF-DIAGNOSTIC TESTS in CHRYSLER CORP. - BODY CONTROL COMPUTER article in the ENGINE PERFORMANCE section below.
  3. If scan tool displays NO RESPONSE, go to TEST NS-6A  . If trouble codes are displayed, see 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  .
TROUBLE CODES

Scan Tool Message Test No.
NO CRANK REFERENCE SIGNAL AT PCM TC-2A 
NO CAM SYNC SIGNAL AT PCM TC-3A 
SLOW CHANGE IN IDLE MAP SENSOR SIGNAL OR NO CHANGE IN MAP FROM START TO RUN TC-4A 
MAP SENSOR VOLTAGE TOO LOW TC-5A 
MAP SENSOR VOLTAGE TOO HIGH TC-6A 
NO VEHICLE SPEED SENSOR SIGNAL TC-7A 
O2S STAYS AT CENTER OR LEFT O2S STAYS AT CENTER TC-8A 
RIGHT O2S STAYS AT CENTER TC-9A 
O2S STAYS ABOVE CENTER (RICH) OR LEFT O2S STAYS ABOVE CENTER (RICH) TC-10A 
RIGHT O2S STAYS ABOVE CENTER (RICH) TC-11A 
O2S STAYS BELOW CENTER (LEAN) OR LEFT O2S STAYS BELOW CENTER (LEAN) TC-12A 
RIGHT O2S STAYS BELOW CENTER (LEAN) TC-13A 
LEFT O2S SHORTED TO VOLTAGE TC-14A 
RIGHT O2S SHORTED TO VOLTAGE TC-15A 
SYSTEM RICH L-IDLE ADAP AT LEAN LIMIT TC-16A 
SYSTEM RICH R-IDLE ADAP AT LEAN LIMIT TC-16A 
SYSTEM LEAN L-IDLE ADAP AT RICH LIMIT TC-16A 
SYSTEM LEAN R-IDLE ADAP AT RICH LIMIT TC-16A 
ECT SENSOR VOLTAGE TOO LOW TC-17A 
ECT SENSOR VOLTAGE TOO HIGH TC-18A 
INTAKE AIR TEMP SENSOR VOLTAGE LOW TC-19A 
INTAKE AIR TEMP SENSOR VOLTAGE HIGH TC-20A 
THROTTLE POSITION SENSOR VOLTAGE LOW TC-21A 
THROTTLE POSITION SENSOR VOLTAGE HIGH TC-22A 
IDLE AIR CONTROL MOTOR CIRCUITS TC-23A 
INJECTOR CONTROL CIRCUITS TC-24A 
EGR SYSTEM FAILURE TC-32A 
EGR SOLENOID CIRCUIT TC-33A 
EVAP SOLENOID CIRCUIT TC-34A 
TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT TC-35A 
TRANS OVERDRIVE SOLENOID CIRCUIT TC-36A 
A/C CLUTCH RELAY CIRCUIT TC-37A 
AUTO SHUTDOWN RELAY CONTROL CIRCUIT TC-38A 
NO ASD RELAY OUTPUT VOLTAGE AT PCM TC-39A 
TRANS TEMP SENSOR VOLTAGE TOO LOW TC-40A 
TRANS TEMP SENSOR VOLTAGE TOO HIGH TC-41A 
PCM FAILURE SRI NOT STORED OR PCM FAILURE EEPROM WRITE DENIED TC-42A 
ENGINE IS COLD TOO LONG (1)
PCM FAILURE SPI COMMUNICATIONS (2)
GENERATOR FIELD NOT SWITCHING PROPERLY (3)
BATTERY TEMP SENSOR VOLTAGE OUT OF LIMIT (3)
CHARGING SYSTEM VOLTAGE TOO LOW (3)
CHARGING SYSTEM VOLTAGE TOO HIGH (3)
SPEED CONTROL SOLENOID CIRCUITS (4)
(1) Check cooling system if engine temperature does not reach 176°F (80°C) after driving 20 minutes. This code may set in error during very cold slow speed driving.
(2) Replace PCM and perform TEST VER-2.
(3) See CHRYSLER CORP. - GENERATORS & REGULATORS article in the ELECTRICAL section.
(4) Refer to appropriate CRUISE CONTROL SYSTEM article in ACCESSORIES/SAFETY EQUIPMENT section. See article references following this table.
scientia non olet · About LEMON Manuals