Infiniti I30 (A33). Manual — part 301
Wiring Diagram
NHEC0579
MEC419D
SEF861Y
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
Wiring Diagram
EC-519
Diagnostic Procedure
NHEC0580
1
RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
SEF255X
©
GO TO 2.
2
CHECK CKPS (REF) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect CKPS (REF) harness connector.
SEF591PA
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.
I
Harness connectors F43, F191
I
Harness 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-520
4
CHECK CKPS (REF) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
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.
I
Harness connectors F43, F191
I
Harness for open or short 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).
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
Diagnostic Procedure (Cont’d)
EC-521
8
CHECK CKPS (REF) SHIELD CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect harness connectors F43, F191.
3. Check harness continuity between harness connector F43 terminal 4 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.
I
Harness connectors F43, F191
I
Joint connector-18
I
Harness for open or short between harness connector F43 and engine ground
©
Repair open circuit or short to power in harness or connectors.
10
CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
©
INSPECTION END
DTC P1335 CRANKSHAFT POSITION SENSOR (CKPS) (REF)
Diagnostic Procedure (Cont’d)
EC-522
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