2007 INFINITI M35 Factory Service Manual

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Page 241 of 4647

INFINITI M35 2007 Factory Service Manual AT-162
DTC P1769 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE FUNCTION
Revision: 2007 April2007 M35/M45
WITH GST
Follow the procedure “WITH CONSULT-II”.
Diagnostic ProcedureNCS001OG
1. CHECK INPUT

Page 242 of 4647

INFINITI M35 2007 Factory Service Manual DTC P1772 LOW COAST BRAKE SOLENOID VALVE
AT-163
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Revision: 2007 April2007 M35/M45
DTC P1772 LOW COAST BRAKE SOLENOID VALVEPFP:31940
DescriptionNCS001OH
Low coast brake solenoi

Page 243 of 4647

INFINITI M35 2007 Factory Service Manual AT-164
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
Revision: 2007 April2007 M35/M45
Diagnostic ProcedureNCS001OM
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELECTION

Page 244 of 4647

INFINITI M35 2007 Factory Service Manual DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
AT-165
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Revision: 2007 April2007 M35/M45
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTIONPFP:31940
DescriptionNCS001ON
Low

DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
AT-165
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Revision: 2007 April2007 M35/M45
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTIONPFP:31940
DescriptionNCS001ON
Low coast brake solenoid valve is turned ON or OFF by the TCM in response to signals sent from the
PNP switch, vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears
will then be shifted to the optimum position.
This is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical mal-
function such as control valve sticking, improper solenoid valve operation.
CONSULT-II Reference ValueNCS001OO
On Board Diagnosis LogicNCS001OP
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P1774 LC/B SOLENOID FNCT” with CONSULT-II or 7th judgement flicker with-
out CONSULT-II is detected under the following conditions.
–When TCM detects that actual gear ratio is irregular, and relation between gear position and condition of
ATF pressure switch 2 is irregular during depressing accelerator pedal. (Other than during shift change.)
–When TCM detects that relation between gear position and condition of ATF pressure switch 2 is irregular
during releasing accelerator pedal. (Other than during shift change.)
Possible CauseNCS001OQ
Harness or connectors
(Solenoid and switch circuits are open or shorted.)
Low coast brake solenoid valve
ATF pressure switch 2
DTC Confirmation ProcedureNCS001OR
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Start engine.
2. Accelerate vehicle to maintain the following conditions.
MANU MODE SW: ON
GEAR: “1” or “2” (LC/B ON/OFF)
3. Perform step 2 again.
4. Turn ignition switch OFF, then perform step 1 to 3 again.
5. Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. If DTC (P1774) is detected, go to AT- 1 6 6 , "
Diagnostic Proce-
dure" .
If DTC (P1772) is detected, go to AT- 1 6 4 , "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value
ON OFF SOLLow coast brake engaged. Refer to AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
.OFF
ATF PRES SW 2Low coast brake engaged. Refer to AT- 2 1
.ON
Low coast brake disengaged. Refer to AT- 2 1
.OFF
BCIA0030E

Page 245 of 4647

INFINITI M35 2007 Factory Service Manual AT-166
DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION
Revision: 2007 April2007 M35/M45
Diagnostic ProcedureNCS001OS
1. CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “SELECTION F

Page 246 of 4647

INFINITI M35 2007 Factory Service Manual DTC P1815 MANUAL MODE SWITCH
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Revision: 2007 April2007 M35/M45
DTC P1815 MANUAL MODE SWITCHPFP:34901
DescriptionNCS001OT
Manual mode switch is installed in A/T device.

DTC P1815 MANUAL MODE SWITCH
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Revision: 2007 April2007 M35/M45
DTC P1815 MANUAL MODE SWITCHPFP:34901
DescriptionNCS001OT
Manual mode switch is installed in A/T device. It sends manual mode switch, shift up and shift down switch
signals to TCM.
TCM sends the switch signals to combination meters. By CAN communication line. Then manual mode switch
position is indicated on the A/T indicator. For inspection, refer to AT- 1 8 6 , "
A/T INDICATOR CIRCUIT" .
CONSULT-II Reference ValueNCS001OU
On Board Diagnosis LogicNCS001OV
This is not an OBD-II self-diagnostic item.
Diagnostic trouble code “P1815 MANU MODE SW/CIRC” with CONSULT-II is detected when TCM moni-
tors Manual mode, Non manual mode, Up or Down switch signal, and detects as irregular when impossi-
ble input pattern occurs 1 second or more.
Possible CauseNCS001OW
Harness or connectors
(These switches circuit is open or shorted.)
Manual mode select switch (Into control device)
Manual mode position select switch (Into control device)
DTC Confirmation ProcedureNCS001OX
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Start engine.
4. Drive vehicle and maintain the following conditions for at least 2
consecutive seconds.
MANU MODE SW: ON
5. If DTC is detected, go to AT- 1 7 0 , "
Diagnostic Procedure" .
Item name Condition Display Value
MANU MODE SWManual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SWManual shift gate position OFF
Other than the above ON
UP SW LEVERSelector lever: + side ON
Other than the above OFF
DOWN SW LEVERSelector lever: - side ON
Other than the above OFF
BCIA0030E

Page 247 of 4647

INFINITI M35 2007 Factory Service Manual AT-168
DTC P1815 MANUAL MODE SWITCH
Revision: 2007 April2007 M35/M45
Wiring Diagram — AT — MMSWNCS001OY
TCWT0347E

Page 248 of 4647

INFINITI M35 2007 Factory Service Manual DTC P1815 MANUAL MODE SWITCH
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Revision: 2007 April2007 M35/M45
TCWT0420E

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