Nissan Terrano model r20 series 2004. Manual — part 228
q
B
CHECK THROTTLE (ACCELERATOR)
POSITION SWITCH CIRCUIT.
1. Turn ignition switch to “ON” posi-
tion.
(Do not start engine.)
2. Select “ECU INPUT SIGNALS” in
Data Monitor.
3. Read out “CLOSED THL/SW” and
“W/O THRL/P-SW” depressing
and releasing accelerator pedal.
Check the signal of throttle (accel-
erator) position switch is indicated
properly.
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to “ON” posi-
tion.
(Do not start engine.)
2. Check voltage between TCM ter-
minals
q
16
,
q
17
and ground while
depressing, and releasing accel-
erator pedal slowly. (after warming
up engine)
OK
E
NG
Check the following items:
I
Throttle (accelerator)
position switch
Refer to “COMPONENT
INSPECTION”, AT-119.
I
Harness for short or
open between ignition
switch and throttle
(accelerator) position
switch (Main harness)
I
Harness for short or
open between throttle
(accelerator) position
switch and TCM (Main
harness)
Perform “DIAGNOSTIC PROCEDURE”,
AT-94.
OK
E
NG
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-
tion
Data monitor
CLOSED
THL/SW
W/O THRL/
P-SW
Released
ON
OFF
Fully
depressed
OFF
ON
Accelerator
pedal
condition
Voltage
Terminal
No.
q
16
Terminal No.
q
17
Released
Battery
voltage
1V or less
Fully
depressed
1V or less
Battery
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-96
COMPONENT INSPECTION
Overdrive control switch
I
Check continuity between terminals
q
1
and
q
2
.
Switch position
Continuity
ON
No
OFF
Yes
A/T mode switch
I
Check continuity between terminals
q
1
, (
q
3
) and
q
2
.
Switch position
Terminal No.
Continuity
S
ON
q
2
—
q
3
Yes
OFF
No
*
ON
q
1
—
q
2
Yes
OFF
No
Park/neutral position switch
1. Check continuity between terminals
q
1
and
q
2
and between
terminals
q
3
and
q
4
,
q
5
,
q
6
,
q
7
,
q
8
,
q
9
while moving man-
ual shaft through each position.
Lever position
Terminal No.
P
q
1
—
q
2
q
3
—
q
7
R
q
3
—
q
8
N
q
1
—
q
2
q
3
—
q
9
D
q
3
—
q
6
2
q
3
—
q
5
1
q
3
—
q
4
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-117.
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
6. If NG on step 4, replace park/neutral position switch.
NAT265
YAT422
SAT517GB
YAT423
YAT424
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont’d)
AT-97
Throttle (accelerator) position switch
Closed throttle position switch (idle position)
I
Check continuity between terminals
q
5
and
q
6
.
Accelerator pedal condition
Continuity
Released
Yes
Depressed
No
I
To adjust closed throttle (accelerator) position switch, refer to
EC section (“Basic Inspection”, “TROUBLE DIAGNOSIS —
Basic Inspection”).
Wide open throttle position switch
I
Check continuity between terminals
q
4
and
q
5
.
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 “ON”.
2. Make sure the A/T fluid warning lamp goes off when turning the
ignition switch to “ON”.
3. For removal, refer to AT-118.
4. Check resistance between terminal
q
6
and ground while
changing temperature as shown at left.
Temperature °C (°F)
Continuity
140 (284) or more
Yes
140 (284) or less
No
YAT425
YAT426
YAT335
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont’d)
AT-98
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 “ON”.
CHECK TCM POWER SOURCE.
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Check voltage between TCM terminals
q
10
,
q
19
and ground.
Battery voltage should exist.
OK
E
NG
Check the following items:
I
Harness for short or
open between ignition
switch and TCM (Main
harness)
I
Ignition switch and fuse
Refer to EL section
(“POWER SUPPLY
ROUTING”).
CHECK TCM GROUND CIRCUIT.
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check resistance between TCM termi-
nals
q
25
,
q
48
and ground.
Resistance:
Approximately 0
Ω
If OK, check harness for short to
ground and short to power.
OK
E
NG
Repair open circuit or short
to ground or short to
power in harness or con-
nector.
CHECK LAMP CIRCUIT.
1. Turn ignition switch to “ON” position.
2. Set overdrive control, A/T check or
power switch to “ON” position.
3. Check voltage between TCM terminal
q
13
and ground.
Voltage: Battery voltage
4. Reinstall any part removed.
OK
E
NG
Check the following items:
I
Fuse (7.5A)
I
SPORT indicator lamp
Refer to EL section
(“WARNING LAMPS”).
I
Harness for short or
open between ignition
switch and SPORT indi-
cator lamp (Main har-
ness)
Refer to EL section
(“POWER SUPPLY
ROUTING”).
I
Harness for short or
open between SPORT
indicator lamp and TCM
Check again.
OK
E
NG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
YAT427
YAT428
YAT429
H
H
H
H
H
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-99
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