Nissan Terrano r20e. Instruction — part 23
DIAGNOSTIC PROCEDURE
CHECK PARK/NEUTRAL 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 “R, N, D, 2 and 1 posi-
tion switches” moving selector
lever to each position.
Check the signal of the selector
lever position is indicated properly.
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to “ON” posi-
tion. (Do not start engine.)
2. Check voltage between TCM ter-
minals
q
26
,
q
27
,
q
34
,
q
35
,
q
36
and
ground while moving selector
lever through each position.
Voltage:
B: Battery voltage
0: 0V
OK
E
NG
Check the following items:
I
Park/neutral position
switch
Refer to “COMPONENT
INSPECTION”, AT-114.
I
Harness for short or
open between ignition
switch and park/neutral
position switch (Main
harness)
I
Harness for short or
open between park/
neutral position switch
and TCM (Main harness)
I
Diode
q
A
(Go to next page.)
Lever position
Terminal No.
q
36
q
35
q
34
q
27
q
26
P, N
B
0
0
0
0
R
0
B
0
0
0
D
0
0
B
0
0
2
0
0
0
B
0
1
0
0
0
0
B
YAT326
H
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
Park/neutral Position, Overdrive Control or
Throttle (Accelerator) Position Switches
(Cont’d)
AT-89
q
A
CHECK OVERDRIVE CONTROL
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 “OVERDRIVE SWITCH”.
Check the signal of the overdrive
control switch is indicated prop-
erly.
(Overdrive control switch “ON”
displayed on CONSULT-II means
overdrive “OFF”.)
----------------------------------------------------------------------------------------------------------------------- OR -----------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to “ON” posi-
tion.
(Do not start engine.)
2. Check voltage between TCM ter-
minal
q
22
and ground when over-
drive control switch is “ON” and
“OFF”.
OK
E
NG
Check the following items.
I
Overdrive control switch
Refer to “COMPONENT
INSPECTION”, AT-114.
I
Harness for short or
open between TCM and
overdrive control switch
(Main harness)
I
Harness for short or
open of ground circuit for
overdrive control switch
(Main harness)
q
B
(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
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-114.
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-89.
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-91
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
1
—
q
2
Yes
OFF
No
*
ON
q
2
—
q
3
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 instruction control linkage disconnected
from instruction shaft of A/T assembly. Refer to step 1.
3. If OK on step 2, adjust instruction 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
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
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