2002 NISSAN TERRANO Service Repair Manual

Wiring Diagram Ð AT Ð PNP/SW
YAT269
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
AT-87

Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
DESCRIPTION
IPark/neutral position switch
Detects the selector lever position and sends a signal to the
TCM.
IOverdrive control switch
Detects the overdrive control switch position (ON or OFF) and
sends a signal to the TCM.
IThrottle (accelerator) position switch
Consists of a wide open throttle position switch and a closed
throttle (accelerator) 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.
YAT336
NAT234
NAT261
NAT306
NAT262
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
AT-88

DIAGNOSTIC PROCEDURE
CHECK PARK/NEUTRAL POSITION
SWITCH CIRCUIT.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out ªR, N, D, 2 and 1 posi-
tion switchesº moving selector
lever to each position.
Check the signal of the selector
lever position is indicated properly.
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion. (Do not start engine.)
2. Check voltage between TCM ter-
minalsq
26,q27,q34,q35,q36and
ground while moving selector
lever through each position.
Voltage:
B: Battery voltage
0: 0V
OK
ENG
Check the following items:
IPark/neutral position
switch
Refer to ªCOMPONENT
INSPECTIONº, AT-114.
IHarness for short or
open between ignition
switch and park/neutral
position switch (Main
harness)
IHarness for short or
open between park/
neutral position switch
and TCM (Main harness)
IDiode
qA
(Go to next page.)
Lever positionTerminal No.
q36q35q34q27q26
P, NB0000
R0B000
D00B00
2 000B0
1 0000B
YAT326
H
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-89

qA
CHECK OVERDRIVE CONTROL
SWITCH CIRCUIT.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out ªOVERDRIVE SWITCHº.
Check the signal of the overdrive
control switch is indicated prop-
erly.
(Overdrive control switch ªONº
displayed on CONSULT-II means
overdrive ªOFFº.)
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Check voltage between TCM ter-
minalq
22and ground when over-
drive control switch is ªONº and
ªOFFº.
OK
ENG
Check the following items.
IOverdrive control switch
Refer to ªCOMPONENT
INSPECTIONº, AT-114.
IHarness for short or
open between TCM and
overdrive control switch
(Main harness)
IHarness for short or
open of ground circuit for
overdrive control switch
(Main harness)
qB(Go to next page.)
Switch position Voltage
ON Battery voltage
OFF 1V or less
YAT327
H
H
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-90

qB
CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH CIRCUIT.
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Select ªECU INPUT SIGNALSº in
Data Monitor.
3. Read out ªCLOSED THL/SWº and
ªW/O THRL/P-SWº depressing
and releasing accelerator pedal.
Check the signal of throttle (accel-
erator) position switch is indicated
properly.
-----------------------------------------------------------------------------------------------------------------------OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº posi-
tion.
(Do not start engine.)
2. Check voltage between TCM ter-
minalsq
16,q17and ground while
depressing, and releasing accel-
erator pedal slowly. (after warming
up engine)
OK
ENG
Check the following items:
IThrottle (accelerator)
position switch
Refer to ªCOMPONENT
INSPECTIONº, AT-114.
IHarness for short or
open between ignition
switch and throttle
(accelerator) position
switch (Main harness)
IHarness for short or
open between throttle
(accelerator) position
switch and TCM (Main
harness)
Perform ªDIAGNOSTIC PROCEDUREº,
AT-89.
OK
ENG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
Accelerator
pedal condi-
tionData monitor
CLOSED
THL/SWW/O THRL/
P-SW
Released ON OFF
Fully
depressedOFF ON
Accelerator
pedal
conditionVoltage
Terminal
No.q
16Terminal No.
q17
ReleasedBattery
voltage1V or less
Fully
depressed1V or lessBattery
voltage
YAT328
YAT329
H
H
H
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-91

COMPONENT INSPECTION
Overdrive control switch
ICheck continuity between terminalsq1andq2.
Switch position Continuity
ON No
OFF Yes
A/T mode switch
ICheck continuity between terminalsq1,(q3) andq2.
Switch position Terminal No. Continuity
SON
q
1Ðq2Ye s
OFF No
*
ON
q2Ðq3Ye s
OFF No
Park/neutral position switch
1. Check continuity between terminalsq1andq2and between
terminalsq
3andq4,q5,q6,q7,q8,q9while moving man-
ual shaft through each position.
Lever position Terminal No.
Pq
1Ðq2q3Ðq7
Rq3Ðq8
Nq1Ðq2q3Ðq9
Dq3Ðq6
2q3Ðq5
1q3Ðq4
2. If NG, check again with manual control linkage disconnected
from manual shaft of A/T assembly. Refer to step 1.
3. If OK on step 2, adjust manual control linkage. Refer to AT-112.
4. If NG on step 2, remove park/neutral position switch from A/T
and check continuity of park/neutral position switch terminals.
Refer to step 1.
5. If OK on step 4, adjust park/neutral position switch. Refer to
AT-114.
6. If NG on step 4, replace park/neutral position switch.
NAT265
NAT266
SAT517GB
NAT267
NAT268
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-92

Throttle (accelerator) position switch
Closed throttle position switch (idle position)
ICheck continuity between terminalsq
5andq6.
Accelerator pedal condition Continuity
Released Yes
Depressed No
ITo adjust closed throttle (accelerator) position switch, refer to
EC section (ªBasic Inspectionº, ªTROUBLE DIAGNOSIS Ð
Basic Inspectionº).
Wide open throttle position switch
ICheck continuity between terminalsq
4andq5.
Accelerator pedal condition Continuity
Released No
Depressed Yes
A/T fluid temperature switch
1. Make sure the A/T fluid warning lamp lights when the key is
inserted and turned to ªONº.
2. Make sure the A/T fluid warning lamp goes off when turning the
ignition switch to ªONº.
3. For removal, refer to AT-113.
4. Check resistance between terminalq
6and ground while chang-
ing temperature as shown at left.
Temperature ÉC (ÉF) Continuity
140 (284) or more Yes
140 (284) or less No
YAT330
YAT331
YAT335
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont'd)
AT-93

1. SPORT Indicator Lamp Does Not Come On
SYMPTOM:
POWER indicator lamp does not come on for about 2 seconds
when turning ignition switch to ªONº.
CHECK TCM POWER SOURCE.
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals
q
4,q9and ground.
Battery voltage should exist.
OK
ENG
Check the following items:
IHarness for short or
open between ignition
switch and TCM (Main
harness)
IIgnition switch and fuse
Refer to EL section
(ªPOWER SUPPLY
ROUTINGº).
CHECK TCM GROUND CIRCUIT.
1. Turn ignition switch to ªOFFº position.
2. Disconnect TCM harness connector.
3. Check resistance between TCM termi-
nalsq
15,q48and ground.
Resistance:
Approximately 0W
If OK, check harness for short to
ground and short to power.
OK
ENG
Repair open circuit or short
to ground or short to
power in harness or con-
nector.
CHECK LAMP CIRCUIT.
1. Turn ignition switch to ªONº position.
2. Set overdrive control, A/T check or
power switch to ªONº position.
3. Check voltage between TCM terminal
q
39and ground.
Voltage: Battery voltage
4. Reinstall any part removed.
OK
ENG
Check the following items:
IFuse (7.5A)
ISPORT indicator lamp
Refer to EL section
(ªWARNING LAMPSº).
IHarness for short or
open between ignition
switch and SPORT indi-
cator lamp (Main har-
ness)
Refer to EL section
(ªPOWER SUPPLY
ROUTINGº).
IHarness for short or
open between SPORT
indicator lamp and TCM
Check again.
OK
ENG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT332
YAT333
YAT334
H
H
H H
H
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-94