NISSAN PRIMERA 1999 Electronic Repair Manual

Worksheet SampleNCEC0036S0101
MTBL0311
TROUBLE DIAGNOSIS Ð INTRODUCTIONSR20DE
Introduction (Cont'd)
EC-81

Work FlowNCEC0037
*1: If the incident cannot be
duplicated, refer to ªTROUBLE
DIAGNOSIS FOR INTERMIT-
TENT INCIDENTº, EC-SR-114.
*2: If the on board diagnostic system
cannot be performed, check main
power supply and ground circuit.
Refer to ªTROUBLE DIAGNOSIS
FOR POWER SUPPLYº,
EC-SR-115.*3: If time data of ªSELF-DIAG
RESULTSº is other than ª0º or ª1tº
refer to ªTROUBLE DIAGNOSIS
FOR INTERMITTENT INCIDENTº,
EC-SR-114.
*4: If the malfunctioning part cannotbe found, refer to ªTROUBLE
DIAGNOSIS FOR INTERMIT-
TENT INCIDENTº, EC-SR-114.
*5: EC-SR-93
*6: EC-SR-52
*7: EC-SR-110
SEF510ZD
TROUBLE DIAGNOSIS Ð INTRODUCTIONSR20DE
Work Flow
EC-82

DESCRIPTION FOR WORK FLOWNCEC0037S01
STEP DESCRIPTION
STEP IGet detailed information about the conditions and the environment when the incident/symptom occurred using the
ªDIAGNOSTIC WORK SHEETº, EC-SR-82.
STEP IIBefore confirming the concern, check and write down (print out using CONSULT-II or Generic Scan Tool) the (1st
trip) Diagnostic Trouble Code (DTC) and the (1st trip) freeze frame data, then erase the code and the data.
(Refer to EC-SR-49.) The (1st trip) DTC and the (1st trip) freeze frame data can be used when duplicating the
incident at STEP III & IV.
Study the relationship between the cause, specified by (1st trip) DTC, and the symptom described by the cus-
tomer. (The ªSymptom Matrix Chartº will be useful. See EC-SR-94.)
Also check related service bulletins for information.
STEP IIITry to confirm the symptom and under what conditions the incident occurs.
The ªDIAGNOSTIC WORK SHEETº and the freeze frame data are useful to verify the incident. Connect CON-
SULT-II to the vehicle in DATA MONITOR (AUTO TRIG) mode and check real time diagnosis results.
If the incident cannot be verified, perform INCIDENT SIMULATION TESTS. (Refer to GI section.)
If the malfunction code is detected, skip STEP IV and perform STEP V.
STEP IVTry to detect the (1st trip) Diagnostic Trouble Code by driving in (or performing) the ªDIAGNOSTIC TROUBLE
CODE CONFIRMATION PROCEDUREº. Check and read the (1st trip) DTC and (1st trip) freeze frame data by
using CONSULT-II or Generic Scan Tool.
During the (1st trip) DTC verification, be sure to connect CONSULT-II to the vehicle in DATA MONITOR (AUTO
TRIG) mode and check real time diagnosis results.
If the incident cannot be verified, perform INCIDENT SIMULATION TESTS. (Refer to GI section.)
In case the ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDUREº is not available, perform the
ªOVERALL FUNCTION CHECKº instead. The (1st trip) DTC cannot be displayed by this check, however, this
simplified ªcheckº is an effective alternative.
The ªNGº result of the ªOVERALL FUNCTION CHECKº is the same as the (1st trip) DTC detection.
STEP VTake the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to TROUBLE DIAGNOSIS FOR DTC PXXXX.
If the normal code is indicated, proceed to the BASIC INSPECTION. (Refer to EC-SR-84.) If CONSULT-II is
available, perform ªDATA MONITOR (SPEC)º mode with CONSULT-II and proceed to the ªTROUBLE DIAGNO-
SIS-SPECIFICATION VALUEº. (Refer to EC-SR-110.) (If malfunction is detected, proceed to ªREPAIR/
REPLACEº). Then perform inspections according to the Symptom Matrix Chart. (Refer to EC-SR-94.)
STEP VIIdentify where to begin diagnosis based on the relationship study between symptom and possible causes. Inspect
the system for mechanical binding, loose connectors or wiring damage using (tracing) ªHarness Layoutsº.
Gently shake the related connectors, components or wiring harness with CONSULT-II set in ªDATA MONITOR
(AUTO TRIG)º mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CON-
SULT-II. Refer to EC-SR-103.
The ªDIAGNOSTIC PROCEDUREº in EC section contains a description based on open circuit inspection. A short
circuit inspection is also required for the circuit check in the DIAGNOSTIC PROCEDURE. For details, refer to GI
section (ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº, ªCircuit Inspectionº).
Repair or replace the malfunction parts.
STEP VIIOnce you have repaired the circuit or replaced a component, you need to run the engine in the same conditions
and circumstances which resulted in the customer's initial complaint.
Perform the ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDUREº and confirm the normal code
[Diagnostic trouble code No. P0000 or 0000] is detected. If the incident is still detected in the final check, perform
STEP VI by using a different method from the previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already fixed) (1st trip) DTC in
ECM. (Refer to EC-SR-49.)
TROUBLE DIAGNOSIS Ð INTRODUCTIONSR20DE
Work Flow (Cont'd)
EC-83

Basic InspectionNCEC0038Precaution:
Perform Basic Inspection without electrical or mechanical loads applied;
IHeadlamp switch is OFF,
IOn vehicles equipped with daytime running light systems, set lighting switch to the 1st position to light only
small lamps.
IAir conditioner switch is OFF,
IRear window defogger switch is OFF,
ISteering wheel is in the straight-ahead position, etc.
1 INSPECTION START
1. Check service records for any recent repairs that may indicate a related problem, or the current need for scheduled maintenance.
2. Open engine hood and check the following:
IHarness connectors for improper connections
IVacuum hoses for splits, kinks, or improper connections
IWiring for improper connections, pinches, or cuts
IAir cleaner clogging
IHoses and ducts for leaks
SEF983U
©GO TO 2.
2 CHECK THROTTLE DRUM OPERATION
Confirm that throttle drum is in contact with stopper.
OK or NG
OK (With CONSULT-II)©GO TO 5.
OK (Without CONSULT-II)©GO TO 8.
NG©GO TO 3.
3 CHECK ACCELERATOR WIRE INSTALLATION
Check accelerator wire for slack.
OK or NG
OK©GO TO 4.
NG©Adjust accelerator wire. Refer to FE-section, ªAdjusting Accelerator Wireº.
4 CHECK THROTTLE VALVE OPERATION
1. Remove intake air ducts.
2. Check throttle valve operation when moving throttle drum by hand.
OK or NG
OK©Retighten the throttle drum fixing nuts.
NG©Clean the throttle body and throttle valve.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection
EC-84

5 CHECK THROTTLE POSITION SENSOR IDLE POSITION
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Turn ignition switch ªONº.
4. Select ºTHRTL POS SENº and ªCLSD THL POSº in ªDATA MONITORº mode with CONSULT-II.
5. Make sure that ªTHRTL POS SENº indicates 0.35 to 0.65 V, and ªCLSD THL POSº indicates ªONº. (Accelerator pedal is fully
released.)
NEF238A
OK or NG
OK©GO TO 11.
NG©GO TO 6.
6 ADJUSTMENT THROTTLE POSITION SENSOR IDLE POSITION
With CONSULT-II
1. Loosen throttle position sensor fixing bolts.
2. Turn throttle position sensor body clockwise or counterclockwise until ªTHRTL POS SENº indication becomes 0.35 to 0.65 V.
SEF964W3. Tighten the throttle position sensor fixing bolts.
©GO TO 7.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Cont'd)
EC-85

7 RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY
With CONSULT-II
NOTE:
Always warm up engine to normal operating temperature. If engine is cold, the throttle position sensor idle position memory will
not reset correctly.
1. Start engine and warm it up to normal operating temperature.
2. Select ªCLSD THL POSº in ªDATA MONITORº mode with CONSULT-II.
3. Stop engine. (Turn ignition switch ªOFFº.)
4. Turn ignition switch ªONº and wait at least 5 seconds.
SEF864V5. Turn ignition switch ªOFFº and wait at least 5 seconds.
6. Repeat steps 4 and 6 until ªCLSD THL POSº indication changes to ªONº.
SEF061Y
©GO TO 11.
8 CHECK THROTTLE POSITION SENSOR IDLE POSITION
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Turn ignition switch ªONº.
4. Check voltage between ECM terminal 92 and ground with accelerator pedal fully released.
NEF239AVoltage: 0.35 to 0.65V
OK or NG
OK©GO TO 6.
NG©GO TO 9.
or
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Cont'd)
EC-86

9 ADJUST THROTTLE POSITION SENSOR IDLE POSITION
Without CONSULT-II
1. Loosen throttle position sensor fixing bolts.
2. Turn throttle position sensor body clockwise or counterclockwise until the voltage between ECM terminal 92 and ground becomes
0.35 to 0.65 V.
SEF964W3. Tighten the throttle position sensor fixing bolts.
©GO TO 10.
10 RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY
Without CONSULT-II
NOTE:
Always warm up engine to normal operating temperature. If engine is cold, the throttle position sensor idle position memory will
not reset correctly.
1. Start engine and warm it up to normal operating temperature.
2. Stop engine. (Turn ignition switch ªOFFº.)
3. Turn ignition switch ªONº and wait at least 5 seconds.
SEF864V4. Turn ignition switch ªOFFº and wait at least 9 seconds.
5. Repeat steps 4 and 6, 20 times.
©GO TO 11.
11 CHECK (1ST TRIP) DTC
1. Start engine and warm it up to normal operating temperature.
2. Rev (2,000 to 3,000 rpm) two or three times.
3. Make sure no (1st trip) DTC is displayed with CONSULT-II, GST or Diagnostic Test Mode II (Self-diagnostic Result).
OK or NG
OK©GO TO 13.
NG©GO TO 12.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Cont'd)
EC-87

12 REPAIR MALFUNCTION
Repair or replace components as necessary according to corresponding ªDiagnostic Procedureº.
©GO TO 11.
13 CHECK TARGET IDLE SPEED
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select ªENG SPEEDº in ªDATA MONITORº mode with CONSULT-II.
3. Check idle speed.
750 50 rpm
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
750 50 rpm
OK or NG
OK©GO TO 22.
NG©GO TO 14.
14 PERFORM IDLE AIR VOLUME LEARNING
Refer to ªIdle Air Volume Learningº, EC-SR-46
Which is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT©GO TO 15.
INCMP©1. Follow the instruction of ªIdle Air Volume Learningº.
2. GO TO 14.
15 CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select ªENG SPEEDº in ªDATA MONITORº mode with CONSULT-II.
3. Check idle speed.
750 50 rpm
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
750 50 rpm
OK or NG
OK©GO TO 20.
NG©GO TO 16.
16 REPLACE IACV-AAC VALVE
Replace IACV-AAC valve.
©GO TO 17.
17 PERFORM IDLE AIR VOLUME LEARNING
Refer to ªIdle Air Volume Learningº, EC-SR-46
Which is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT©GO TO 18.
INCMP©1. Follow the instruction of ªIdle Air Volume Learningº.
2. GO TO 14.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Cont'd)
EC-88

18 CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select ªENG SPEEDº in ªDATA MONITORº mode with CONSULT-II.
3. Check idle speed.
750 50 rpm
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
750 50 rpm
OK or NG
OK©GO TO 20.
NG©GO TO 19.
19 CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a problem, but this is rarely the case.)
2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to ªNATS (Nissan Anti-Theft System)º, EC-SR-
58.
©GO TO 14.
20 CHECK IGNITION TIMING
1. Start engine and warm it up to normal operating temperature.
2. Check ignition timing at idle using a timing light.
SEF984UIgnition timing:
15É 2É BTDC
OK or NG
OK©GO TO 28.
NG©GO TO 21.
21 CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-section.
OK or NG
OK©GO TO 19.
NG©1. Repair the timing chain installation.
2. GO TO 14.
Timing light
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Cont'd)
EC-89

22 CHECK IGNITION TIMING
1. Start engine and let it idle.
2. Check ignition timing at idle using a timing light.
SEF984UIgnition timing:
15É 2É BTDC
OK or NG
OK©GO TO 28.
NG©GO TO 23.
23 PERFORM IDLE AIR VOLUME LEARNING
Refer to ªIdle Air Volume Learningº, EC-SR-46
Which is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT©GO TO 24.
INCMP©GO TO 23.
24 CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select ªENG SPEEDº in ªDATA MONITORº mode with CONSULT-II.
3. Check idle speed.
750 50 rpm
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
750 50 rpm
OK or NG
OK©GO TO 26.
NG©GO TO 15.
25 CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function.
(ECM may be the cause of a problem, but this is rarely the case.)
2. Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to ªNATS (Nissan Anti-Theft System)º,
EC-SR-58.
©GO TO 23.
26 CHECK IGNITION TIMING AGAIN
Check ignition timing again. Refer to Test No. 22.
OK or NG
OK©GO TO 28.
NG©GO TO 27.
Timing light
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Cont'd)
EC-90