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ECM INSPECTION TABLE Remarks: Specification data are reference values and are measured between each terminal and ground. CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam- TERMI- NAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage and Pulse Signal) 101 G/R Fuel cut solenoid valve [Ignition switch “OFF”] Approximately 0V [Ignition switch “ON”] BATTERY VOLTAGE 104 B ECM ground [Engine is running] I Idle speed Approximately 0V 107 Y Power supply for ECM [Ignition switch “ON”] BATTERY VOLTAGE 202 Y/R Injection timing control [Engine is running] I Warm-up condition I Idle speed Approximately 10 - 12V NEF480 [Engine is running] I Warm-up condition I Engine speed is 2,000 rpm Approximately 9 - 14 V NEF481 204 G/PU Air conditioner relay [Engine is running] I Air conditioner switch is “OFF” BATTERY VOLTAGE [Engine is running] I Both air conditioner switch and blower fan switch Approximately 0.1V 205 Y/PU Oil pressure switch [Ignition switch “ON”] Approximately 0V [Engine is running] I Idle speed Voltages 208 R/Y EGRC-solenoid valve A [Engine is running] I Warm-up condition I Idle speed Approximately 0.7V [Engine is running] I Warm-up condition I Engine speed is 2,800 rpm BATTERY VOLTAGE TROUBLE DIAGNOSES TD27Ti ECM Terminals and Reference Value (Cont’d) EC-370 |