IGNITION CONTROL SYSTEM — Trouble-shooting (Cont'd)
EF & EC-657spec tableTEST TABLE
Test Table
1. Battery Voltage (no-load)
TEST METHODSee fig1
CONDITIONS1. Ignition key in "OFF" position. 2. Connect voltmeter as illustrated and set to appropriate scale. 3. Read and record battery voltage reading.
RESULT11.5 - 12.5 volts
ACTIONProceed to Step 2.
1. Battery Voltage (no-load)
TEST METHOD
CONDITIONS
RESULTBelow 11.5 volts
ACTIONBattery, charging system or starting system — Faulty. Refer to applicable section in Service Manual to correct the situation.
2. Battery Cranking Voltage
TEST METHODSee fig2 (SEL103)
CONDITIONS1. Connect voltmeter as illustrated and set to appropriate scale. 2. Remove coil wire from distributor cap and ground it. 3. Read voltmeter while cranking engine for approximately 15 seconds. 4. Record battery cranking voltage reading.
RESULTVoltage reading greater than 9.6 volts
ACTIONBattery O.K. Proceed to Step 3.
2. Battery Cranking Voltage
TEST METHOD
CONDITIONS
RESULTVoltage reading less than 9.6 volts
ACTIONBattery, charging system or starting system — Faulty. Refer to applicable sections in Service Manual to correct the situation.
3. Ignition Coil Secondary Circuit
TEST METHODSee fig3 (SEL104)
CONDITIONS1. Ignition key in "OFF" position. 2. Remove coil wire from coil. 3. Connect ohmmeter as illustrated.
RESULTSpecified value (Refer to "Service Data and Specifications".)
ACTIONIgnition coil secondary windings — O.K. Proceed to Step 4.
3. Ignition Coil Secondary Circuit
TEST METHOD
CONDITIONS
RESULTNot within the specified values
ACTIONFaulty ignition coil — replace.
4. Power Supply Circuit
TEST METHODSee fig4 (SEL641B)
CONDITIONS1. Connect voltmeter as illustrated and set to appropriate scale. 2. Turn ignition key to "ON" position.
RESULT11.5 - 12.5 volts
ACTIONProceed to Step 5.
4. Power Supply Circuit
TEST METHOD
CONDITIONS
RESULTBelow 11.5 volts
ACTIONCheck wiring from ignition switch to IC unit.
See also
Service Data and Specifications