Page 1043 of 2395
12 CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.
3. Disconnect ignition coil harness connector.
SEF975Y
4. Turn ignition switch ON.
5. Check voltage between ignition coil terminal 3 and ground with CONSULT-II or tester.
SEF370X
OK or NG
OK©GO TO 14.
NG©GO TO 13.
13 DETECT MALFUNCTIONING PART
Check the harness for open or short between ignition coil and harness connector F22.
©Repair or replace harness or connectors.
14 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 power.
OK or NG
OK©GO TO 15.
NG©Repair open circuit or short to power in harness or connectors.
DTC P1320 IGNITION SIGNAL
Diagnostic Procedure (Cont'd)
EC-508
Page 1044 of 2395
15 CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 21, 22, 23, 30, 31, 32 and ignition coil terminal 1. 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 IGNITION COIL WITH POWER TRANSISTOR
Check resistance between ignition coil terminals 2 and 3.
SEF371X
OK or NG
OK©GO TO 17.
NG©Replace ignition coil with power transistor.
17 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-140.
©INSPECTION END
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DTC P1320 IGNITION SIGNAL
Diagnostic Procedure (Cont'd)
EC-509
Page 1046 of 2395

On Board Diagnosis LogicNBEC0576Malfunction is detected when
(Malfunction A)120É signal is not entered to ECM for the first few
seconds during engine cranking,
(Malfunction B)120É signal is not entered to ECM during engine
running,
(Malfunction C)120É signal cycle excessively changes during
engine running.
FAIL-SAFE MODENBEC0576S01When the ECM enters the fail-safe mode, the MIL illuminates.
Detected items Engine operating condition in fail-safe mode
Crankshaft position sensor (REF)
circuitCompression TDC signal (120É signal) is controlled by camshaft position sensor (PHASE)
signal and crankshaft position sensor (POS) signal. Ignition timing will be delayed 0É to 2É.
Possible CauseNBEC0577IHarness or connectors
(The crankshaft position sensor (REF) circuit is open or
shorted.)
ICrankshaft position sensor (REF)
IStarter motor (Refer to SC section.)
IStarting system circuit (Refer to SC section.)
IDead (Weak) battery
DTC Confirmation ProcedureNBEC0578NOTE:
IPerform ªPROCEDURE FOR MALFUNCTION Aº first. If 1st
trip DTC cannot be confirmed, perform ªPROCEDURE
FOR MALFUNCTION B AND Cº.
IIf ªDTC Confirmation Procedureº has been previously
conducted, always turn ignition switch ªOFFº and wait at least
10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10.5V at idle.
SEF013Y
PROCEDURE FOR MALFUNCTION ANBEC0578S01With CONSULT-IINBEC0578S01011) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Crank engine for at least 2 seconds.
4) If 1st trip DTC is detected, go to ªDiagnostic Procedureº,
EC-514.
With GSTNBEC0578S0102Follow the procedure ªWith CONSULT-IIº above.
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DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
On Board Diagnosis Logic
EC-511
Page 1049 of 2395
Diagnostic ProcedureNBEC0580
1 RETIGHTEN GROUND SCREWS
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screws.
SEF959Y
©GO TO 2.
2 CHECK CKPS (REF) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect CKPS (REF) harness connector.
SEF011Z
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 65, 75 and CKPS (REF) terminal 2. 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 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E132, E135
IHarness connectors E116, M114 and M32, F23
IHarness for open or short between crankshaft position sensor (REF) and ECM
©Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
Diagnostic Procedure
EC-514
Page 1050 of 2395

4 CHECK CKPS (REF) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between CKPS (REF) terminal 1 and engine ground.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK©GO TO 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E132, E135
IHarness connectors E116, M114 and M32, F23
IHarness for open between crankshaft position sensor (REF) and engine ground
©Repair open circuit or short to power in harness or connector.
6 CHECK CKPS (REF)-I
1. Loosen the fixing bolts and remove the CKPS (REF).
2. Visually check the CKPS (REF) for chipping.
SEF585P
OK or NG
OK©GO TO 7.
NG©Replace crankshaft position sensor (REF).
7 CHECK CKPS (REF)-II
Check resistance between CKPS (REF) terminals 1 and 2.
SEF350X
OK or NG
OK©GO TO 8.
NG©Replace crankshaft position sensor (REF).
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DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
Diagnostic Procedure (Cont'd)
EC-515
Page 1051 of 2395
8 CHECK CKPS (REF) SHIELD CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect harness connectors E132, E135.
3. Check harness continuity between harness connector E135 terminal 7 and engine ground.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK©GO TO 10.
NG©GO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E132, E135
IHarness connectors E116, M114 and M32, F23
IHarness for open between harness connector F23 and engine ground
©Repair open circuit or short to power in harness or connectors.
10 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-140.
©INSPECTION END
DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
Diagnostic Procedure (Cont'd)
EC-516
Page 1056 of 2395
Diagnostic ProcedureNBEC0297
1 RETIGHTEN GROUND SCERWS
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screws.
SEF959Y
©GO TO 2.
2 CHECK CKPS (POS) POWER SUPPLY CIRCUIT
1. Disconnect harness connectors E132, E135.
SEF978Y
2. Check voltage between harness connector E135 terminal 6 and ground with CONSULT-II or tester.
SEF979Y
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 4.
NG©GO TO 3.
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DTC P1336 CRANKSHAFT POSITION SENSOR (CKPS) (POS) (COG)
Diagnostic Procedure
EC-521
Page 1059 of 2395

10 CHECK CRANKSHAFT POSITION SENSOR (POS)
1. Disconnect crankshaft position sensor (POS) harness connector.
2. Loosen the fixing bolt of the sensor.
3. Remove the sensor.
4. Visually check the sensor for chipping.
SEF981Y
OK or NG
OK©GO TO 11.
NG©Replace crankshaft position sensor (POS).
11 CHECK CRANKSHAFT POSITION SENSOR (POS)-II
1. Reconnect harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminal 85 and ground by briefly touching the sensor core with a flat-bladed screwdriver.
SEF343Z
OK or NG
OK©GO TO 12.
NG©Replace crankshaft position sensor (POS).
12 CHECK CKPS (POS) SHIELD CIRCUIT FOR OPEN AND SHORT
1. Disconnect harness connectors E132, E135.
2. Check harness continuity between harness connector E135 terminal 2 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK©GO TO 14.
NG©GO TO 13.
DTC P1336 CRANKSHAFT POSITION SENSOR (CKPS) (POS) (COG)
Diagnostic Procedure (Cont'd)
EC-524