Infiniti G37 Coupe. Manual — part 1326
P1815 MANUAL MODE SWITCH
TM-157
< COMPONENT DIAGNOSIS >
[5AT: RE5R05A]
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P1815 MANUAL MODE SWITCH
Description
INFOID:0000000001672201
Manual mode switch is installed in A/T device. It transmits manual mode switch, shift up and shift down switch
signals to unified meter and A/C amp. Then unified meter and A/C amp. transmits signals to TCM with CAN
communication.
Paddle shifter transmits shift up and shift down switch signals to unified meter and A/C amp. Then unified
meter and A/C amp. transmits signals to TCM with CAN communication. (With paddle shifter)
TCM transmits the switch signals to unified meter and A/C amp. by CAN communication line. Then manual
mode switch position is indicated on the A/T indicator. For inspection, refer to
DTC Logic
INFOID:0000000001672202
DTC DETECTION LOGIC
*1: With paddle shifter
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Start the engine.
2.
Select “DATA MONITOR”.
3.
Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.
Is “P1815 MANU MODE SW/CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-38, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000001672203
1.
CHECK MANUAL MODE SWITCH CIRCUIT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR”.
3.
Check the On/Off operations of each monitor item.
DTC
Item
(CONSULT-III screen
terms)
A/T CHECK indicator
lamp judgment flicker
Diagnostic item is detect-
ed when...
Possible cause
P1815
MANU MODE SW/CIRC
—
• TCM monitors manual
mode, non manual
mode, up or down
switch signal, and de-
tects as irregular when
impossible input pat-
tern occurs 2 second
or more.
• When shift up/down
signal of paddle shifter
continuously remains
ON for 60 seconds.
(With paddle shifter)
• Harness or connectors
(These switches circuit
is open or shorted.)
• Manual mode select
switch (Into control de-
vice)
• Manual mode position
select switch (Into con-
trol device)
• Paddle shifter
*1
MANU MODE SW
: ON
TM-158
< COMPONENT DIAGNOSIS >
[5AT: RE5R05A]
P1815 MANUAL MODE SWITCH
*: With paddle shifter
Without CONSULT-III
Drive the vehicle in the manual mode and shift the select lever and paddle shifter* to “UP (+ side)” or “DOWN
(
−
side)” side (1st
⇔
5th gear). Check that the meter indicator coincides with the actual gear position.
*: With paddle shifter
Which item is abnormal?
Manual mode switch>>GO TO 2.
Paddle shifter>>GO TO 9.
2.
CHECK MANUAL MODE SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect A/T device connector.
3.
Turn ignition switch ON.
4.
Check voltage between A/T device vehicle side harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
CHECK MANUAL MODE SWITCH
Check manual mode switch. Refer to
TM-161, "Component Inspection (Manual Mode Switch)"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK MALFUNCTIONING ITEM
Check the following.
• Check terminals of A/T device harness connector and harness cladding for damage.
• Check connector for loose connection.
Is the inspection result normal?
YES
>> GO TO 17.
Item
Monitor Item
Condition
Status
Manual mode switch
MANU MODE SW
Manual shift gate position (neutral)
On
Other than the above
Off
NON M-MODE SW
Manual shift gate position
Off
Other than the above
On
UP SW LEVER
Selector lever: UP (+ side)
On
Other than the above
Off
DOWN SW LEVER
Selector lever: DOWN (
−
side)
On
Other than the above
Off
Paddle shifter*
SFT UP ST SW
Paddle shifter: UP (+ side)
On
Other than the above
Off
SFT DWN ST SW
Paddle shifter: DOWN (
−
side)
On
Other than the above
Off
A/T device vehicle side harness connector
Voltage (Approx.)
Connector
Terminal
M137
1
4
Battery voltage
2
3
5
P1815 MANUAL MODE SWITCH
TM-159
< COMPONENT DIAGNOSIS >
[5AT: RE5R05A]
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NO
>> Repair or replace damaged parts.
5.
CHECK GROUND CIRCUIT
Check continuity between A/T device vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK POWER SOURCE CIRCUIT
Check voltage between A/T device vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> GO TO 7.
7.
CHECK HARNESS BETWEEN A/T DEVICE AND UNIFIED METER AND A/C AMP. (STEP 1)
1.
Turn ignition switch OFF.
2.
Disconnect unified meter and A/C amp. connector.
3.
Check continuity between A/T device vehicle side harness connector terminals and unified meter and A/C
amp. vehicle side harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace damaged parts.
8.
CHECK HARNESS BETWEEN A/T DEVICE AND UNIFIED METER AND A/C AMP. (STEP 2)
Check continuity between A/T device vehicle side harness connector terminals and ground.
Is the inspection result normal?
A/T device vehicle side harness connector
Ground
Continuity
Connector
Terminal
M137
4
Existed
A/T device vehicle side harness connector
Ground
Voltage (Approx.)
Connector
Terminal
M137
1
Battery voltage
2
3
5
A/T device vehicle side harness connector
Unified meter and A/C amp. vehicle side harness
connector
Continuity
Connector
Terminal
Connector
Terminal
M137
1
M66
10
Existed
2
25
3
5
5
11
A/T device vehicle side harness connector
Ground
Continuity
Connector
Terminal
M137
1
Not existed
2
3
5
TM-160
< COMPONENT DIAGNOSIS >
[5AT: RE5R05A]
P1815 MANUAL MODE SWITCH
YES
>> GO TO 16.
NO
>> Repair or replace damaged parts.
9.
CHECK PADDLE SHIFTER CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect paddle shifter connector.
3.
Turn ignition switch ON.
4.
Check voltage between paddle shifter vehicle side harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 12.
10.
CHECK PADDLE SHIFTER
Check paddle shifter. Refer to
TM-162, "Component Inspection (Paddle Shifter)"
.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair or replace damaged parts.
11.
CHECK MALFUNCTIONING ITEM
Check the following.
• Check terminals of paddle shifter connector for damage.
• Check connector for loose connection.
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> Repair or replace damaged parts.
12.
CHECK GROUND CIRCUIT
Check continuity between paddle shifter vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Repair or replace damaged parts.
13.
CHECK POWER SOURCE CIRCUIT
Check voltage between paddle shifter vehicle side harness connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> GO TO 14.
14.
CHECK HARNESS BETWEEN PADDLE SHIFTER AND UNIFIED METER AND A/C AMP. (STEP 1)
1.
Turn ignition switch OFF.
Paddle shifter vehicle side harness connector
Voltage (Approx.)
Connector
Terminal
M32
3
1
Battery voltage
M39
3
1
Paddle shifter vehicle side harness connector
Ground
Continuity
Connector
Terminal
M32
1
Existed
M39
1
paddle shifter vehicle side harness connector
Ground
Voltage (Approx.)
Connector
Terminal
M32
3
Battery voltage
M39
3
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