Page 1321 of 2248
OBD0108A
3
CHECK GROUND CIRCUIT OF ECM.
1) Turn ignition switch to OFF.
2) Measure resistance of harness connector between
ECM and body.
: Connector & terminal
(B84) No. 25—Body/10Ω, or less
(B84) No. 45—Body/10Ω, or less
(B84) No. 46—Body/10Ω, or less
(B84) No. 69—Body/10Ω, or less
(B84) No. 70—Body/10Ω, or less
(B84) No. 71—Body/10Ω, or less
(B84) No. 72—Body/10Ω, or less
(B84) No. 95—Body/10Ω, or less
(B84) No. 96—Body/10Ω, or less
: Check ignition control system.
[T9D0]”.>
: Repair harness between ECM connector and
body.
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9. Diagnostics for Engine Starting Failure
Page 1322 of 2248
D: IGNITION CONTROL SYSTEM
1.Check ignition system for sparks.
2.Check power supply circuit for ignition coil.
3.Check ignition coil.
4.Check harness connector between ignitor and
ignition coil.
5.Check input signal for ignitor.
6.Check harness connector of ignitor ground
circuit.
7.Check harness connector between ECM and
ignitor.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
WIRING DIAGRAM:
B2M0622
11 6
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9. Diagnostics for Engine Starting Failure
Page 1323 of 2248

OBD0727
1
CHECK IGNITION SYSTEM FOR SPARKS.
1) Remove plug cord cap from each spark plug.
2) Install new spark plug on plug cord cap.
CAUTION:
Do not remove spark plug from engine.
3) Contact spark plug’s thread portion on engine.
4) While opening throttle valve fully, crank engine to check
that spark occurs at each cylinder.
: Does spark occur at each cylinder?
: Check fuel pump system.
: Go to step 2.
OBD0123A
2CHECK POWER SUPPLY CIRCUIT FOR IGNI-
TION COIL.
1) Turn ignition switch to OFF.
2) Disconnect connector from ignition coil.
3) Turn ignition switch to ON.
4) Measure power supply voltage between ignition coil
connector terminal and body.
: Connector & terminal
(E12) No. 2—Body /10 V, or more
: Go to step 3.
: Repair harness between ignition coil and ignition
switch connector.
OBD0124
3
CHECK IGNITION COIL.
1) Measure resistance between ignition coil terminals to
check primary coil.
: Terminals
No. 2—No. 1/0.7±0.3Ω
No. 2—No. 3/0.7±0.3Ω
: Replace ignition coil.
: Go to next step.
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9. Diagnostics for Engine Starting Failure
Page 1324 of 2248

OBD0125A
2) Measure resistance between spark plug cord contact
portions to check secondary coil.
: Connector & terminal
#1—#2 /21±3 kΩ
#3—#4 /21±3 kΩ
: Go to step 4.
: Replace ignition coil.
OBD0126A
4CHECK HARNESS CONNECTOR BETWEEN
IGNITOR AND IGNITION COIL.
1) Turn ignition switch to OFF.
2) Disconnect connector from ignitor.
3) Measure resistance of harness connector between igni-
tion coil and ignitor.
: Connector & terminal
(B13) No. 5—(E12) No. 1/10Ω, or less
(B13) No. 6—(E12) No. 3/10Ω, or less
: Go to step 5.
: Go to next.
: Is there poor contact in coupling connector
(B22)?
: Repair poor contact in coupling connector.
: Repair harness between ignition coil and ignitor
connector.
OBD0728
5
CHECK INPUT SIGNAL FOR IGNITOR.
Check if voltage varies synchronously with engine speed
when cranking, while monitoring voltage between ignitor
connector and body.
: Connector & terminal:
(B13) No. 1—Body/10 V, or more
(B13) No. 2—Body/10 V, or more
: Go to step 6.
: Replace ignitor.
B2M0224A
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9. Diagnostics for Engine Starting Failure
Page 1325 of 2248

OBD0128A
6CHECK HARNESS CONNECTOR OF IGNITOR
GROUND CIRCUIT.
1) Turn ignition switch to OFF.
2) Measure resistance between ignitor and body.
: Connector & terminal
(B13) No. 3—Body /10Ω, or less
: Go to step 7.
: Repair harness between ignitor connector and
body.
OBD0129A
7CHECK HARNESS CONNECTOR BETWEEN
ECM AND IGNITOR.
1) Disconnect connector from ECM.
2) Measure resistance of harness connector between
ECM and ignitor.
: Connector & terminal
(B84) No. 14—(B13) No. 1/10Ω, or less
(B84) No. 13—(B13) No. 2/10Ω, or less
(B84) No. 69—(B13) No. 3/10Ω, or less
: Repair open circuit of harness between ECM and
ignitor connector.
: Go to next step.
OBD0130A
3) Measure resistance of harness connector between
ECM and body.
: Connector & terminal
(B84) No. 13—Body/1 MΩ, or more
(B84) No. 14—Body/1 MΩ, or more
: Repair short circuit of harness between ECM and
ignitor.
: Confirm good connection in ECM connector.
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Page 1326 of 2248
E: FUEL PUMP CIRCUIT
1.Check operating sound of fuel pump.
2.Check ground circuit of fuel pump.
3.Check power supply to fuel pump.
4.Check harness connector between fuel pump
and fuel pump relay.
5.Check fuel pump relay.
6.Check harness connector between ECM and
fuel pump relay.
WIRING DIAGRAM:
LHD model
OBD0131
120
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. Diagnostics for Engine Starting Failure
Page 1327 of 2248
WIRING DIAGRAM:
RHD model
B2M0446
121
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. Diagnostics for Engine Starting Failure
Page 1328 of 2248

1
CHECK OPERATING SOUND OF FUEL PUMP.
Make sure that fuel pump is in operation for two seconds
when turning ignition switch to ON.
: Does fuel pump produce operating sound?
: Check fuel injector circuit.
: Go to step 2.
OBD0132A
2
CHECK GROUND CIRCUIT OF FUEL PUMP.
1) Turn ignition switch to OFF.
2) Disconnect connector from fuel pump.
3) Measure resistance of harness connector between fuel
pump and body.
: Connector & terminal
(R58) No. 4—Body /10Ω, or less
: Go to step 3.
: Repair open circuit of fuel pump ground circuit.
OBD0133A
3
CHECK POWER SUPPLY TO FUEL PUMP.
1) Turn ignition switch to ON.
2) Measure voltage of power supply circuit between fuel
pump connector and body.
: Connector & terminal
(R58) No. 1—Body /10 V, or more
: Replace fuel pump.
: Go to step 4.
OBD0134A
4CHECK HARNESS CONNECTOR BETWEEN
FUEL PUMP AND FUEL PUMP RELAY.
1) Turn ignition switch to OFF.
2) Measure resistance of harness connector between fuel
pump and fuel pump relay.
: Connector & terminal
(R58) No. 1—(B46) No. 4/10Ω, or less
: Go to next.
: Repair open circuit of harness between fuel pump
and fuel pump relay connector.
: Connector & terminal
(R58) No. 1—Body/1 MΩ, or more
: Go to step 5.
: Repair short circuit of harness between fuel pump
and fuel pump relay connector.
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9. Diagnostics for Engine Starting Failure