NISSAN PATROL 2000 Electronic Owners Manual

Description
The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the A/T.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code Malfunction is detected when ... Check item (Possible cause)
: CONT UNIT (EEP ROM)TCM memory (EEP ROM) is malfunc-
tioning.TCM
SELF-DIAGNOSIS CODE CONFIRMATION
PROCEDURE
NOTE:
If ªSELF-DIAGNOSIS CODE CONFIRMATION PROCEDUREº
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 A/T with CONSULT-II.
2) Start engine.
3) Run engine for at least 2 seconds at idle speed.
SAT574J
SAT014K
SAT971J
TROUBLE DIAGNOSIS FOR CONTROL UNIT (EFP ROM)
AT-1089

Diagnostic Procedure
1 CHECK DTC
WITH CONSULT-II
1. Turn ignition switch ªONº and select ªSELF DIAG RESULTSº mode for A/T 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 Self-diagnosis Code confirmation procedure.
See previous page.
Is the ªCONT UNIT (EEP ROM)º displayed again?
YescReplace TCM.
NocINSPECTION END
TROUBLE DIAGNOSIS FOR CONTROL UNIT (EFP ROM)
AT-1090

PNP, Overdrive Control, A/T Mode or
Accelerator Position Switches
DESCRIPTION
+PNP switch
Detects the selector lever position and sends a signal to the
TCM.
+Overdrive control switch, A/T mode switch
Detects the overdrive control switch position (ON or OFF)
and sends a signal to the TCM.
+Accelerator position switch
Consists of a wide open throttle position switch and a closed
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.
SAT218JA
SAT220JA
SAT222JA
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
AT-1091

DIAGNOSTIC PROCEDURE
CHECK PNP SWITCH CIRCUIT.
1. Turn ignition switch to ªONº
position.
(Do not start engine.)
2. Select ªTCM INPUT SIGNALSº
in Data Monitor.
3. Read out ªR, N, D, 2 and 1
position switchesº moving
selector lever to each position.
Check the signal of the selector
lever position is indicated prop-
erly.
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº
position. (Do not start engine.)
2. Check voltage between TCM
terminals
V26,V27,V34,V35,V36
and ground while moving selec-
tor lever through each position.
Voltage:
B: Battery voltage
0: 0V
OK
cNG
Check the following items:
+PNP switch
Refer to ªCOMPONENT
INSPECTIONº,
AT-1095.
+Harness for short or
open between ignition
switch and PNP switch
(Main harness)
+Harness for short or
open between PNP
switch and TCM (Main
harness)
+Diode
VA
(Go to next page.)
Lever positionTerminal No.V36V35V34V27V26
P, NB0000
R0B000
D00B00
2 000B0
1 0000B
SAT738J
SAT227J
.
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
PNP, Overdrive Control, A/T Mode or
Accelerator Position Switches (Cont'd)
AT-1092

VA
CHECK OVERDRIVE CONTROL
SWITCH CIRCUIT.
Ð Except for the Middle East Ð
1. Turn ignition switch to ªONº
position.
(Do not start engine.)
2. Select ªTCM INPUT SIGNALSº
in Data Monitor.
3. Read out ªOVERDRIVE
SWITCHº.
Check the signal of the over-
drive control switch is indicated
properly.
(Overdrive control switch ªONº
displayed on CONSULT-II
means overdrive ªOFFº.)
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº
position.
(Do not start engine.)
2. Check voltage between TCM
terminal
V22and ground when
overdrive control switch is ªONº
and ªOFFº.
OK
cNG
Check the following items.
+Overdrive control switch
Refer to ªCOMPONENT
INSPECTIONº,
AT-1095.
+Harness for short or
open between TCM and
overdrive control switch
(Main harness)
+Harness for short or
open of ground circuit
for overdrive control
switch (Main harness)
VB
(Go to next page.)
Switch position Voltage
ON Battery voltage
OFF 1V or less
SAT740J
SAT224J
.
.
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
PNP, Overdrive Control, A/T Mode or
Accelerator Position Switches (Cont'd)
AT-1093

VB
CHECK ACCELERATOR POSITION
SWITCH CIRCUIT.
1. Turn ignition switch to ªONº
position.
(Do not start engine.)
2. Select ªTCM INPUT SIGNALSº
in Data Monitor.
3. Read out ªCLOSED THL/SWº
and ªW/O THRL/P-SWº
depressing and releasing accel-
erator pedal.
Check the signal of accelerator
position switch is indicated
properly.
------------------------------------------------------------------------------------------------------------------------------------OR------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªONº
position.
(Do not start engine.)
2. Check voltage between TCM
terminals
V16,V17and ground
while depressing, and releasing
accelerator pedal slowly. (after
warming up engine)
OK
cNG
Check the following items:
+Accelerator position
switch
Refer to ªCOMPONENT
INSPECTIONº,
AT-1096.
+Harness for short or
open between ignition
switch and accelerator
position switch (Main
harness)
+Harness for short or
open between accelera-
tor position switch and
TCM (Main harness)
Perform ªDIAGNOSTIC PROCEDUREº,
AT-1092.
OK
cNG
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 condi-
tionVoltage
Terminal
No.
V16Terminal No.
V17
ReleasedBattery volt-
age1V or less
Fully
depressed1V or lessBattery
voltage
SAT739J
SAT226J
.
.
.
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
PNP, Overdrive Control, A/T Mode or
Accelerator Position Switches (Cont'd)
AT-1094

COMPONENT INSPECTION
Overdrive control switch
+Check continuity between terminalsV1andV2.
Switch position Continuity
ON No
OFF Yes
A/T mode switch
+Check continuity between terminalsV1,(V3) andV2.
Switch position Terminal No. Continuity
SPORTON
V2ÐV3Yes
OFF No
ONV1ÐV2Yes
OFF No
PNP switch
1. Check continuity between terminalsV1andV2and between
terminals
V3andV4,V5,V6,V7,V8,V9while moving
manu-
al shaft through each position.
Lever position Terminal No.
P
V1ÐV2V3ÐV7
RV3ÐV8
NV1ÐV2V3ÐV9
DV3ÐV6
2V3ÐV5
1V3ÐV4
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-1126.
4. If NG on step 2, remove PNP switch from A/T and check
continuity of PNP switch terminals. Refer to step 1.
5. If OK on step 4, adjust PNP switch. Refer to AT-1125.
6. If NG on step 4, replace PNP switch.
SAT228J
SAT208K
SAT517GB
SAT231JA
SAT232JA
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
PNP, Overdrive Control, A/T Mode or
Accelerator Position Switches (Cont'd)
AT-1095

Accelerator position switch
Accelerator position switch (Off accel)
+Check continuity between terminals
V5andV6.
Accelerator pedal condition Continuity
Released Yes
Depressed No
+To adjust closed throttle (accelerator) position switch, refer to
EC section (ªBasic Inspectionº, ªTROUBLE DIAGNOSIS Ð
Basic Inspectionº).
Accelerator position switch (Full accel)
+Check continuity between terminals
V4andV5.
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-1124.
4. Check resistance between terminal
V10and ground while
changing temperature as shown at left.
Temperature ÉC (ÉF) Resistance
140 (284) or more Yes
140 (284) or less No
SAT209K
SAT210K
SAT251J
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMS
PNP, Overdrive Control, A/T Mode or
Accelerator Position Switches (Cont'd)
AT-1096

1. SPORT Indicator Lamp Does Not Come On
SYMPTOM:
SPORT indicator lamp does not come on for about 2 sec-
onds 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
V10,V19and ground.
Battery voltage should exist.
OK
cNG
Check the following items:
+Harness for short or
open between ignition
switch and TCM (Main
harness)
+Ignition 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-
nals
V25,V48and ground.
Resistance:
Approximately 0W
If OK, check harness for short to
ground and short to power.
OK
cNG
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 A/T mode switch to ªSPORTº posi-
tion.
3. Check voltage between TCM terminal
V13and ground.
Voltage: Battery voltage
4. Reinstall any part removed.
OK
cNG
Check the following items:
+Fuse (7.5A)
+SPORT indicator lamp
Refer to EL section
(ªWARNING LAMPSº).
+Harness for short or
open between ignition
switch and SPORT indi-
cator lamp (Main har-
ness)
Refer to EL section
(ªPOWER SUPPLY
ROUTINGº).
+Harness for short or
open between SPORT
indicator lamp and TCM
Check again.
OK
cNG
1. Perform TCM input/
output signal inspection.
2. If NG, recheck TCM pin
terminals for damage or
loose connection with
harness connector.
INSPECTION END
SAT211JA
SAT256J
SAT257J
SAT258J
.
.
. .
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1097

2. SPORT Indicator Lamp Does Not Come On
SYMPTOM:
SPORT indicator lamp does not come on when turning A/T
mode switch to the appropriate position.
Is 1. SPORT Indicator Lamp Does Not
Come On OK?
Yes
cNo
Go to 1. SPORT Indicator
Lamp Does Not Come On,
AT-1097.
Check the following items:
+A/T mode switch
Refer to AT-1095.
+Harness continuity between ignition
switch and A/T mode switch
+Harness continuity between A/T mode
switch and TCMcNG
Repair or replace dam-
aged parts.
3. O/D OFF Indicator Lamp Does Not Come
On
SYMPTOM:
O/D OFF indicator lamp does not come on when setting
overdrive control switch to ªOFFº position.
Check the following items:
+Overdrive control switch
Refer to AT-1095.
+O/D OFF indicator lamp
+Harness continuity between ignition
switch and O/D OFF indicator lampcNG
Repair or replace dam-
aged parts.
SAT211JA
SAT210J
.
DIAGNOSTIC PROCEDURES FOR SYMPTOMS
AT-1098