Nissan Titan. Manual — part 605
P1815 M-MODE SWITCH
TM-103
< DTC/CIRCUIT DIAGNOSIS >
C
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A
B
TM
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Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the
position mutually coincide when the selector lever is shifted to the “+ (up)” or “- (down)” side (1GR
⇔ 5GR).
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING ITEM
Check the following items.
• Manual mode switch. Refer to
TM-103, "Component Inspection"
.
• Pin terminals for damage or loose connection with harness connector.
• Open circuit or short to ground or short to power in harness or connector for A/T shift selector (manual mode
switch).
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK TCM
Perform TCM input/output signal inspection. Refer to
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING ITEM
Check the following items:
• Power supply and ground circuit for TCM.
• The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> Replace the transmission assembly. Refer to
TM-211, "Removal and Installation (2WD)"
"Removal and Installation (4WD)"
NG
>> Repair or replace damaged parts.
6.
CHECK DTC
Perform DTC Confirmation Procedure.
• Refer to
TM-102, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 4.
Component Inspection
INFOID:0000000009885864
MANUAL MODE SWITCH
Check continuity between A/T shift selector connecotr terminals.
Position Indicator Lamp
INFOID:0000000009885865
DIAGNOSTIC PROCEDURE
Item
Position
Terminal No.
(Unit side)
Continuity
Manual mode (se-
lect) switch
Manual
2 - 6
Yes
UP switch
UP
2 - 4
DOWN switch
DOWN
2 - 5
JSDIA1486ZZ
TM-104
< DTC/CIRCUIT DIAGNOSIS >
P1815 M-MODE SWITCH
1.
CHECK INPUT SIGNALS (WITH CONSULT)
With CONSULT
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for A/T with CONSULT and read out the value of
“GEAR”.
3. Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of
the position mutually coincide when the select lever is shifted to the “+ (up)” or “- (down)” side (1GR
⇔
5GR).
OK or NG
OK
>> INSPECTION END
NG
>> Check the following items.
Position Indicator Lamp Symptom Chart
Items
Presumed Location of Trouble
The actual gear position does not change, or shifting into the man-
ual mode is not possible (no gear shifting in the manual mode pos-
sible).
The position indicator lamp is not indicated.
Manual mode switch
Refer to
A/T main system (Fail-safe function actuated)
• Refer to
.
The actual gear position changes, but the position indicator lamp
is not indicated.
Perform the self-diagnosis function.
• Refer to
.
The actual gear position and the indication on the position indica-
tor lamp do not coincide.
Perform the self-diagnosis function.
• Refer to
.
Only a specific position or positions is/are not indicated on the po-
sition indicator lamp.
Check the combination meter.
Refer to
MWI-19, "SHIFT POSITION INDICATOR : System De-
.
MAIN POWER SUPPLY AND GROUND CIRCUIT
TM-105
< DTC/CIRCUIT DIAGNOSIS >
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MAIN POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000009885866
1.
CHECK TCM POWER SOURCE (PART 1)
1. Turn ignition switch OFF.
2. Disconnect A/T assembly connector.
3. Check voltage between A/T assembly harness connector termi-
nals and ground.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 7.
2.
CHECK TCM POWER SOURCE (PART 2)
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between A/T assembly harness connector termi-
nals and ground.
OK or NG
OK
>> GO TO 3.
NG (Floor shift)>>GO TO 8.
NG (Column shift)>>GO TO 9.
3.
CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
Item
Connector
Terminal
Voltage
A/T assembly harness con-
nector (floor shift)
F9
1 - Ground
Battery voltage
2 - Ground
6 - Ground
0 V
Item
Connector
Terminal
Voltage
A/T assembly harness con-
nector (column shift)
F17
1 - Ground
Battery voltage
2 - Ground
6 - Ground
0 V
SCIA2104E
Item
Connector
Terminal
Voltage
A/T assembly harness con-
nector (floor shift)
F9
1 - Ground
Battery voltage
2 - Ground
6 - Ground
Item
Connector
Terminal
Voltage
A/T assembly harness con-
nector (column shift)
F17
1 - Ground
Battery voltage
2 - Ground
6 - Ground
SCIA2105E
TM-106
< DTC/CIRCUIT DIAGNOSIS >
MAIN POWER SUPPLY AND GROUND CIRCUIT
2. Check continuity between A/T assembly harness connector ter-
minals and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
DETECT MALFUNCTIONING ITEM
Check the following items:
• The A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace damaged parts.
5.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer to
TM-38, "CONSULT Function (TRANSMISSION)"
.
OK or NG
OK
>> INSPECTION END
NG-1 >> Self-diagnosis does not activate: GO TO 6.
NG-2 >> DTC is displayed: Check the malfunctioning system. Refer to
6.
CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to
TM-201, "Control Valve with TCM"
.
2. Disconnect A/T assembly harness connector and TCM connector.
3. Check continuity between A/T assembly harness connector ter-
minals and TCM connector terminals.
Item
Connector
Terminal
Continuity
A/T assembly harness con-
nector (floor shift)
F9
5 - Ground
Yes
10 - Ground
Item
Connector
Terminal
Voltage
A/T assembly harness con-
nector (column shift)
F17
5 - Ground
Yes
10 - Ground
SCIA2106E
Item
Connector
Terminal
Continuity
A/T assembly harness con-
nector (floor shift)
F9
1
Yes
A/T assembly harness con-
nector (column shift)
F17
TCM connector
F502
9
A/T assembly harness con-
nector (floor shift)
F9
2
Yes
A/T assembly harness con-
nector (column shift)
F17
TCM connector
F502
10
A/T assembly harness con-
nector (floor shift)
F9
6
Yes
A/T assembly harness con-
nector (column shift)
F17
TCM connector
F502
4
SCIA5464E
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