Labels:text | parallel | diagram | black and white | number | document | font | line | receipt OCR: ECM TERMINAL VOLTAGE THIS ECM VOLTAGE CHART IS FOR USE WITH DIGITAL VOLTMETER TO FURTHER AID IN DIAGNOSIS. THESE VOLTAGES WERE DERIVED FROM A KNOWN GOOD VEHICLE. THE VOLTAGES YOU GET MAY VARY DUE TO LOW BATTERY CHARGE OR OTHER REASONS, BUT THEY SHOULD BE VERY CLOSE. THE FOLLOWING CONDITIONS MUST BE MET BEFORE TESTING: ENGINE AT OPERATING TEMPERATURE . CLOSED LOOP (ENGINE AT 1000 RPM) . ENGINE AT 1000 RPM (FOR "ENGINE RUN" COLUMNI . TEST TERMINAL NOT GROUNDED . . SCANNER NOT INSTALLED Voltage Voltage Voltage . 2 WD Voltage Voltage Voltage Key Engine Circuit Key "ON" Engine Circe Circuit "ON" Rur Open Run Open SENSOR RETURN 22 1 NOT USED 5 5 SV RÉFÉRENCE 21 2 TPS SENSOR SIGNAL *1.0 +5.0 *2.0 5.0 5.65 2.3 VACUUM COOLANT TEMP. SENSOR SENSOR SIGNAL 20 3 SIGNAL *3.0 2.5 5,0 12 14 EGF 19 4 NOT USED 12 5-10 [var .. ] M/C SOLENOID 18 5 DIAGNOSTIC TEST TERM 5 5 5 NOT USED 17 6 NOT USED NOT USED 16 7 COOLANT TEMP, SENSOR RETURN 0 0 0 NOT USED 15 8 NOT USED . 5 *. 5 1.7 OXYGEN SENSOR - LO 14 9 OXYGEN SENSOR - HI .3.45 .1-9 (var ) 3-45 *. 5 DIST. REF. PULSE - LO 13 10 DIST. REF. PULSE - HI .5 (var .] . 5 *5 1-2 Ivat. *. 5 EST 12 11 IGN. MODULE BY-PASS *5 3.7 5 NOT USED J K NOT USED NOT USED H L ESC SIGNAL (4.3L} 7-10 7-10 *5 10 *5 "CHECK ENGINE" LAMP G M NOT USED NOT USED F N ATH GEAR SWITCH . 5 12 12 14 THROTTLE KICKER E P TRANS CONVERTER CLUTCH SOLENOID 12 14 5 NOT USED D R TROUBLE CODE MEMORY POWER 12 14 5 12 14 .5 IGN. 1 POWER C $ NOT USED 12 14 AIR DIVERT SOLENOID B T PURGE 12 .12 *5 0 0 0 GROUND (TO ENGINE) A U GROUND (TO ENGINE) 0 0 0 * = Value Shown or Less Than that Value 1 - Wide Open Throttle (var) = variable
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