NISSAN PRIMERA 1999 Electronic Repair Manual

Description
ªCVT SAFE FUNCTIONº is function to protect CVT.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: CVT SAFE FUNCTION
TCM is malfunctioning TCM
: 10th judgement flicker
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for CVT with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
Without CONSULT-II
1) Start engine.
2) Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCE-
DURE (Without CONSULT-II), AT-25.SAT651J
SAT971J
SAT455FALight
Shade
CVT SAFE FUNCTION
Description
AT-99

Diagnostic Procedure
1 CHECK INPUT SIGNAL (With CONSULT-II)
1. Turn ignition switch to ªONº and select ªSELF DIAG RESULTSº mode for CVT with CONSULT-II.
2. Touch ªERASEº.
Perform ªDIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDUREº. See previous page.
Is the ªCVT SAFE FUNCTIONº displayed again?
YES©Replace TCM
NO©INSPECTION END
CVT SAFE FUNCTION
Diagnostic Procedure
AT-100

DescriptionNCAT0239The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the CVT.
ON BOARD DIAGNOSIS LOGICNCAT0239S01
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: CONTROL UNIT (RAM)
: CONTROL UNIT (ROM)TCM memory (RAM) or (ROM) is mal-
functioning.TCM
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NCAT0239S02NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for CVT with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
SAT574J
SAT651J
SAT971J
CONTROL UNIT (RAM), CONTROL UNIT (ROM)
Description
AT-101

Diagnostic Procedure=NCAT0240
1 CHECK DTC
With CONSULT-II
1. Turn ignition switch ªONº and select ªSELF DIAG RESULTSº mode for CVT with CONSULT-II.
2. Touch ªERASEº.
PERFORM DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE.
See previous page.
Is the ªCONTROL UNIT (RAM) or CONTROL UNIT (ROM)º displayed again?
Ye s©Replace TCM.
No©INSPECTION END
CONTROL UNIT (RAM), CONTROL UNIT (ROM)
Diagnostic Procedure
AT-102

DescriptionNCAT0241The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the CVT.
ON BOARD DIAGNOSIS LOGICNCAT0241S01
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: CONT UNIT (EEPROM)TCM memory (EEPROM) is malfunction-
ing.TCM
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NCAT0241S02NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for CVT with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
SAT574J
SAT651J
SAT971J
CONTROL UNIT (EEPROM)
Description
AT-103

Diagnostic Procedure=NCAT0242
1 CHECK DTC
With CONSULT-II
1. Turn ignition switch ªONº and select ªSELF DIAG RESULTSº mode for CVT with CONSULT-II.
2. Move selector lever to ªRº position.
3. Depress accelerator pedal (Full throttle position).
4. Touch ªERASEº.
5. Turn ignition switch ªOFFº position for 10 seconds.
PERFORM DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE.
See previous page.
Is the ªCONT UNIT (EEPROM)º displayed again?
Ye s©Replace TCM.
No©INSPECTION END
CONTROL UNIT (EEPROM)
Diagnostic Procedure
AT-104

PNP Switch, Stop Lamp Switch and Throttle
Position Switch
NAAT0204
SYMPTOM:
CVT or SPORT indicator lamp does not come on in TCM self-
diagnostic procedure even the lamp circuit is good.
DESCRIPTIONNAT0204S01
IPNP switch
IThe PNP switch assemble includes a transmission range
switch. The transmission range switch detects the selector
position and sends a signal to the TCM.
IStop lamp switch
Detects the stop lamp switch position (ON or OFF) and sends
a signal to the TCM
IThrottle position switch.
Consists of a wide open throttle position switch and a closed
throttle position switch.
The wide open throttle position switch sends a signal to the
TCM when the throttle valve is open at least 1/2 of the full
throttle position. The closed throttle position switch sends a
signal to the TCM when the throttle valve is fully closed.
TROUBLE DIAGNOSES FOR NON-DETECTABLE ITEMS
PNP Switch, Stop Lamp Switch and Throttle Position Switch
AT-105

1 CHECK PNP SWITCH CIRCUIT (With CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
SAT651J3. Read out ªP/Nº, ªRº, ªDº and ªLº position switches moving selector lever to each position.
Check the signal of the selector lever position is indicated properly.
OK or NG
OK©GO TO 3.
NG©Check the following items:
IPNP switch
Refer to ªComponent Inspectionº, AT-53.
IHarness for short or open between ignition switch and PNP switch (Main harness)
IHarness for short or open between PNP switch and TCM (Main harness)
IIgnition switch and fuse
Refer to EL section (ªPOWER SUPPLY ROUTINGº).
IDiode (P, N positions)
2 CHECK PNP SWITCH CIRCUIT (Without CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals 27, 34, 35, 36 and ground while moving selector lever through each position.
Voltage:
B: Battery voltage
0: 0V
OK or NG
OK©GO TO 3.
NG©Check the following items:
IPNP switch
Refer to ªComponent Inspectionº, AT-53.
IHarness for short or open between ignition switch and PNP switch (Main harness)
IHarness for short or open between PNP switch and TCM (Main harness)
IIgnition switch and fuse
Refer to EL section (ªPOWER SUPPLY ROUTINGº).
IDiode (P, N positions)
Lever
positionTerminal No.
36 35 34 27
P, NB000
R0B00
D0 0B0
L000B
MTBL0312
TROUBLE DIAGNOSES FOR NON-DETECTABLE ITEMS
PNP Switch, Stop Lamp Switch and Throttle Position Switch (Cont'd)
AT-106

3 CHECK PNP SWITCH CIRCUIT (With CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
SAT651J3. Read out ªBRAKE SWº moving brake pedal to each position.
Check the signal of the brake pedal is indicated properly.
OK or NG
OK©GO TO 5.
NG©Check the following items:
IHarness for short or open between fuse block and PNP switch harness terminal 3
IFuse
IIgnition switch (Refer to EL section.)
4 CHECK STOP LAMP SWITCH CIRCUIT (Without CONSULT-II)
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between stop lamp switch harness terminal 1 and ground. Refer to ªWiring Diagram Ð CVT Ð MAINº, AT-45.
SAT733J
Stop lamp switch
LHD models
RHD models
Does battery voltage exist?
OK©GO TO 5.
NG©Check the following items:
IHarness for short or open between battery and stop lamp switch harness terminal 1
IFuse
IIgnition switch (Refer to EL section.)
TROUBLE DIAGNOSES FOR NON-DETECTABLE ITEMS
PNP Switch, Stop Lamp Switch and Throttle Position Switch (Cont'd)
AT-107

5 CHECK THROTTLE POSITION SWITCH CIRCUIT (With CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
3. Read out ªCLOSED THL/SWº and ªW/O THRL/P-SWº depressing and releasing accelerator pedal.
Check the signal of throttle position switch is indicated properly.
OK or NG
OK©GO TO 7.
NG©Check the following items:
IThrottle position switch Ð Refer to ªComponents Inspectionº, AT-85.
IHarness for short or open between ignition switch and throttle position switch (Main
harness)
IHarness for short or open between throttle position switch and TCM (Main harness)
Accelerator pedal
conditionData monitor
CLOSED THL/SW W/O THRL/P-SW
ReleasedON OFF
Fully depressedOFF ON
MTLB0011
TROUBLE DIAGNOSES FOR NON-DETECTABLE ITEMS
PNP Switch, Stop Lamp Switch and Throttle Position Switch (Cont'd)
AT-108