Nissan Primera P11. Manual — part 210
4
ADJUST IGNITION TIMING
With CONSULT-II
1. Adjust ignition timing to the specified value by turning distributor after loosening bolts which secure distributor.
Without CONSULT-II
1. Adjust ignition timing to the specified value by turning distributor after loosening bolts which secure distributor.
2. Turn off engine and connect throttle position sensor harness connector to throttle position sensor. (CVT models only)
SEF197X
Models with CONSULT-II
©
GO TO 2.
Models without CONSULT-II
©
GO TO 3.
5
CHECK TARGET IDLE SPEED
With CONSULT-II
1. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.
2. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
NEF059A
750±50 rpm
(in “P” or “N” position for CVT)
OK or NG
OK
©
GO TO 8.
NG
©
1. Perform “Idle air volume learning”. Refer to EC-SR-46.
2. If still NG, GO TO 7.
Throttle position
sensor harness
connector
Throttle body
Closed throttle position switch
harness connector (CVT models)
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-39
6
CHECK TARGET IDLE SPEED
Without CONSULT-II
1. Turn off engine and connect throttle position sensor harness connector (CVT models only).
SEF197X
2. Start engine.
3. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.
4. Check target idle speed.
750±50 rpm
(in “P” or “N” position for CVT)
OK or NG
OK
©
GO TO 8.
OK (Ignition timing NG)
©
GO TO 7.
NG
©
GO TO 7.
7
DETECT MALFUNCTIONING PART
Check the following.
1. Check closed throttle position switch idle position. Refer to EC-SR-84.
2. Check IACV-AAC valve and replace if necessary. Refer to EC-SR-263.
3. Check IACV-AAC valve harness and repair if necessary. Refer to EC-SR-263.
4. Perform “Idle air volume learning”. Refer to EC-SR-46.
5. Check ECM function by substituting another known good ECM.
(ECM may be the cause of a problem, but this is rarely the case.)
©
GO TO 8.
Throttle position
sensor harness
connector
Throttle body
Closed throttle position switch
harness connector (CVT models)
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-40
8
CHECK HEATED OXYGEN SENSOR 1 (FRONT) SIGNAL
With CONSULT-II
1. See “HO2S1 MNTR (B1)” in “DATA MONITOR” mode.
2. Run engine at about 2,000 rpm for about 2 minutes under no-load.
3. Maintain engine at 2,000 rpm under no-load (engine is warmed up to normal operating temperature) and check that the monitor fluctu-
ates between “LEAN” and “RICH” more than five times during 10 seconds.
SEF820Y
1 cycle: RICH
→
LEAN
→
RICH
2 cycles: RICH
→
LEAN
→
RICH
→
LEAN
→
RICH
Without CONSULT-II
1. Set “Heated oxygen sensor 1 (front) monitor” in the Diagnostic Test Mode II. (See page EC-SR-58.)
Short terminals between “IGN” and “CHK” for 2 seconds or more. Then open the circuit.
SEF945W
2. Run engine at about 2,000 rpm for about 2 minutes under no-load (engine is warmed up to normal operating temperature).
3. Maintain engine at 2,000 rpm under no-load and check that MI goes on more than five times during 10 seconds.
SAT652J
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 9.
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-41
9
CHECK HEATED OXYGEN SENSOR 1 (FRONT) HARNESS
1. Turn off engine and disconnect battery ground cable.
2. Disconnect ECM harness connector.
3. Disconnect heated oxygen sensor 1 (front) harness connector.
4. Then connect harness connector terminal for heated oxygen sensor 1 (front) to ground with a jumper wire.
MEF031DA
5. Check for continuity between terminal 62 of ECM harness connector and body ground.
Continuity exists...OK
Continuity does not exist...NG
OK or NG
OK
©
1. Connect ECM harness connector to ECM.
2. GO TO 10.
NG
©
1. Repair or replace harness.
2. GO TO 5. (With CONSULT-II)
3. GO TO 6. (Without CONSULT-II)
Heated oxygen sensor 1 (front)
harness connector
BASIC SERVICE PROCEDURE
SR20DE
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-42
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