Page 769 of 2267
4 CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 110, 112 and ground with CONSULT-II or tester.
SEF366X
OK or NG
OK©GO TO 5.
NG©Go to TROUBLE DIAGNOSIS FOR POWER SUPPLY, EC-QG-103.
5 CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Turn ignition switch ON.
4. Check voltage between condenser terminal 1 and ground with CONSULT-II or tester.
SEF367X
OK or NG
OK©GO TO 11.
NG©GO TO 6.
IGNITION SIGNALQG16I18DE
Diagnostic Procedure (Cont'd)
EC-327
Page 770 of 2267
6 CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect ECM relay.
SEF984W3. Check harness continuity between ECM relay terminal 7 and condenser terminal 1. Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 8.
NG©GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F73, E90
IHarness for open or short between ECM relay and condenser
©Repair open circuit or short to ground or short to power in harness or connectors.
8 CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
1. Check voltage between ECM relay terminal 6 and ground with CONSULT-II or tester.
SEF368X
OK or NG
OK©GO TO 10.
NG©GO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
I15A fuses
IHarness for open and short between ECM relay and fuse
©Repair or replace harness or connectors.
IGNITION SIGNALQG16I18DE
Diagnostic Procedure (Cont'd)
EC-328
Page 771 of 2267
10 CHECK ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between ECM relay terminals 3 and 5, 6 and 7.
SEF296X
OK or NG
OK©GO TO 18.
NG©Replace ECM relay.
11 CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and engine ground. Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 12.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
12 CHECK CONDENSER
Refer to ªComponent Inspectionº, EC-QG-331.
SEF369X
OK or NG
OK©GO TO 13.
NG©Replace condenser.
IGNITION SIGNALQG16I18DE
Diagnostic Procedure (Cont'd)
EC-329
Page 772 of 2267

13 CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.
3. Disconnect ignition coil harness connector.
4. Turn ignition switch ON.
5. Check voltage between ignition coil terminal 1 and ground with CONSULT-II or tester.
NEF237AVoltage: Battery voltage
OK or NG
OK©GO TO 15.
NG©GO TO 14.
14 DETECT MALFUNCTIONING PART
Check the harness for open or short ignition coil harness connector F73.
©Repair or replace harness or connectors.
15 CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and engine ground. Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 16.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
16 CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 35, 36, 37, 38 and ignition coil terminal 3. Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 17.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
17 CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to ªComponent Inspectionº, EC-QG-331331.
OK or NG
OK©GO TO 18.
NG©Replace ignition coil with power transistor.
IGNITION SIGNALQG16I18DE
Diagnostic Procedure (Cont'd)
EC-330
Page 773 of 2267
18 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-QG-102.
©INSPECTION END
Component InspectionNCEC0547IGNITION COIL WITH POWER TRANSISTORNCEC0547S011. Disconnect ignition coil with power transistor harness connec-
tor.
2. Check ignition coil with power transistor for resistance as show
in the figure.
Terminal No. (Polarity) ResistanceW[at 25ÉC (77ÉF)]
3 (+) - 2 (þ) Except 0 or¥
1 (+) - 3 (þ)
Except 0
1 (+) - 2 (þ)
If NG, replace ignition coil with power transistor assembly.
CONDENSERNCEC0547S021. Disconnect condenser harness connector.
2. Check condenser continuity between terminals 1 and 2.
Resistance: Above 1 MWat 25ÉC (77ÉF)
SEF371Q
SEF059X
IGNITION SIGNALQG16I18DE
Diagnostic Procedure (Cont'd)
EC-331
Page 774 of 2267
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0441Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
START SIGNALIIgnition switch: ON,START,ON OFF,ON,OFF
ECM Terminals and Reference ValueNCEC0442Specification 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-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
41 B/Y Start signal[Ignition switch ªONº]Approximately 0V
[Ignition switch ªSTARTº]9 - 12V
START SIGNALQG16I18DE
CONSULT-II Reference Value in Data Monitor Mode
EC-332
Page 775 of 2267
Wiring DiagramNCEC0440
YEC282
BATTERY
Refer to EL-POWER.
: Detectable line for DTC
: Non-detectable line for DTC
FUSE
BLOCK
(J/B) IGNITION
SWITCH
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B) OFF
ACC
ONST
START SIGNALQG16I18DE
Wiring Diagram
EC-333
Page 776 of 2267
Diagnostic Procedure=NCEC0443
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 3.
2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªSTART SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
PEF111P
MTBL0140
OK or NG
OK©INSPECTION END
NG©GO TO 4.
Condition ªSTART SIGNALº
IGN ªONº OFF
IGN ªSTARTº ON
START SIGNALQG16I18DE
Diagnostic Procedure
EC-334