Infiniti QX4 (R50). Manual — part 263
DTC Confirmation Procedure
NBEC0295
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” 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.
SEF058Y
WITH CONSULT-II
NBEC0295S01
1)
Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
2)
Start engine and run it for at least 70 seconds at idle speed.
3)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-521.
WITH GST
NBEC0295S02
Follow the procedure “WITH CONSULT-II” above.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1336 CRANKSHAFT POSITION SENSOR (CKPS) (POS) (COG)
DTC Confirmation Procedure
EC-519
Wiring Diagram
NBEC0296
MEC959C
DTC P1336 CRANKSHAFT POSITION SENSOR (CKPS) (POS) (COG)
Wiring Diagram
EC-520
Diagnostic Procedure
NBEC0297
1
RETIGHTEN GROUND SCERWS
1. Turn ignition switch “OFF”.
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.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1336 CRANKSHAFT POSITION SENSOR (CKPS) (POS) (COG)
Diagnostic Procedure
EC-521
3
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E132, E135
I
Harness for open or short between ECM and crankshaft position sensor (POS)
I
Harness for open or short between ECM relay and crankshaft position sensor (POS)
©
Repair open circuit or short to ground or short to power in harness or connectors.
4
CHECK CKPS (POS) GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between harness connector E135 terminal 1 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
2. 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 E132, E135
I
Harness connectors E116, M114
I
Harness connectors M32, F23
I
Harness for open between ECM and crankshaft position sensor (POS)
©
Repair open circuit or short to power in harness or connectors.
6
CHECK CKPS (POS) INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 85 and harness connector F23 terminal 16. 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 8.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
7
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E132, E135
I
Harness connectors E116, M114
I
Harness connectors M32, F23
I
Harness for open or short between ECM and crankshaft position sensor (POS)
©
Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1336 CRANKSHAFT POSITION SENSOR (CKPS) (POS) (COG)
Diagnostic Procedure (Cont’d)
EC-522
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