SMU - SECTION 6E3 - DRIVEABILITY & EMISSIONS. Pontiac Sunfire 1995

SUBJECT: SERVICE MANUAL UPDATE-SECTION 6E3-DRIVEABILITY AND EMISSIONS REVISED CHART C-10, CHART C-19 AND DTC 66

MODELS: 1995 CHEVROLET CAVALIER 1995 PONTIAC SUNFIRE WITH 2.2L AND 2.3L ENGINES (VINS 4 AND D - RPOS LN2 AND LD2)

THIS BULLETIN IS BEING ISSUED TO REVISE DTC 66 A/C REFRIGERANT PRESSURE SENSOR, CHART C-10 A/C CLUTCH CONTROL CIRCUIT DIAGNOSIS AND CHART C-19 PCM CONTROLLED GENERATOR OF THE 1995 "J" CAR SERVICE MANUAL, BOOK 2 OF 2. THE FOLLOWING PAGES ARE REVISED AS FOLLOWS:

2.2L ENGINE: * PAGE 6E3-A-84. THE DTC 66 FACING PAGE ART INCORRECTLY CALLS OUT THE PCM TERMINAL FOR THE A/C PRESSURE SENSOR SIGNAL. THE A/C PRESSURE SENSOR SIGNAL IS CONNECTED TO TERMINAL J1-30 OF THE PCM, NOT TERMINAL J2-03. * PAGE 6E3-C10-2, 4. THE CHART C-10 FACING PAGE ART INCORRECTLY CALLS OUT THE PCM TERMINAL FOR THE A/C PRESSURE SENSOR SIGNAL. THE A/C PRESSURE SENSOR SIGNAL IS CONNECTED TO TERMINAL J1-30 OF THE PCM, NOT TERMINAL J2-03. * PAGES 6E3-C19-2, 3. IN THE CHART C-19 TEST DESCRIPTION STEP 4, AND THE DIAGNOSTIC CHART, THE GENERATOR TERMINALS ARE INCORRECTLY CALLED OUT. WHEN THE CHART CALLS OUT "CAVITY B," IT IS REFERRING TO "CAVITY L" OF THE GENERATOR ELECTRICAL CONNECTOR. WHEN CALLING OUT "CAVITY C," IT IS REFERRING TO "CAVITY F" OF THE GENERATOR ELECTRICAL CONNECTOR.

2.2L AND 2.3L ENGINES * PAGE 6E3-C10-4. IN THE CHART C-10 TEST DESCRIPTIONS, THE TEST DESCRIPTION 5 INCORRECTLY STATES "WITH THE ENGINE STOPPED AND FIELD SERVICE MODE ACTIVATED,...." THIS SHOULD STATE, "WITH THE ENGINE RUNNING AND THE A/C RELAY COMMANDED 'ON',...." THE TECH 1 SCAN TOOL WILL NOT ALLOW THE A/C RELAY TO BE COMMANDED WHEN THE ENGINE IS NOT RUNNING. * PAGE 6E3-C10-5. THE CHART C-10 DIAGNOSTIC CHARTS FOR BOTH THE 2.2L AND 2.3L INCORRECTLY STATE IN STEP 5 TO HAVE THE "IGNITION 'ON,' ENGINE STOPPED." THIS SHOULD READ "IGNITION 'ON,' ENGINE RUNNING." THE TECH 1 SCAN TOOL WILL NOT ALLOW THE A/C RELAY TO BE COMMANDED WHEN THE ENGINE IS NOT RUNNING.

PLEASE MAKE A NOTE OF THESE REVISIONS IN YOUR SERVICE MANUAL.

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GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.