Infiniti G35 (V35) Sedan. Manual — part 1354
TM-108
< FUNCTION DIAGNOSIS >
[5AT: RE5R05A]
SHIFT LOCK SYSTEM
SHIFT LOCK SYSTEM
System Description
INFOID:0000000000957005
The selector lever cannot shifted from the “P” position unless the brake pedal is depressed while the ignition
switch ON.
The shift lock is unlocked by the shift lock unit that is activated when the ignition switch ON and the stop lamp
switch is turned ON (brake pedal is depressed).
Therefore, the shift lock unit receives no ON signal and the shift lock remains locked if the above conditions
are not fulfilled. (However, a shift operation is allowed if the shift lock release button is pressed.)
SHIFT LOCK OPERATION AT “P” POSITION
When Brake Pedal Is Not Depressed (No Shift Operation Allowed)
The shift lock solenoid (A) inside the shift lock unit is not energized if
the brake pedal is not depressed while the ignition switch ON.
The lock plate (B) lowers according to the downward movement of
the position pin (C) when the selector button (D) is pressed, and
presses only slider B (E) into the shift lock unit. Slider A (F) located
below the lock plate prevents the downward movement of the lock
plate with the spring force. The selector lever cannot be shifted from
the “P” position for this reason.
However, slider A is forcibly pressed into the shift lock unit, allowing
the selector lever to shift if the shift lock release button is pressed.
When Brake Pedal Is Depressed (Shift Operation Allowed)
The shift lock solenoid (A) inside the shift lock unit is energized and
the relative positions of sliders A (B) and B (C) are maintained when
the brake pedal is depressed while the ignition switch ON.
The lock plate (D) lowers according to the downward movement of
the position pin (E), thrusting away sliders A and B, when the selec-
tor button (F) is pressed.
The position pin lowers to the position that allows shift operation for
this reason. As a result, the selector lever can be shifted out of the P
position.
OPERATION AT OTEHER THAN “P” POSITION
The shift lock function will not operate at any position other than “P”
because the lock plate (A) is only set for the “P” position. Accord-
ingly, the selector lever can be shifted to any position regardless of
the brake operation.
The position pin (B) enters the “P” position thrusting away the lock
plate when the selector lever is shifted to the “P” position. Then, the
shift mechanism is locked when the selector button (C) is released.
“P” POSITION RETAINING MECHANISM (IGNITION SWITCH LOCK)
When ignition switch is not in the ON position, power is not applied to the shift lock solenoid in the shift lock
unit. This causes shift lock state, and then “P” position is retained.
When an actuating system in the shift lock unit has a malfunction, selector lever is unable to operate from the
“P” position even when pressing the brake pedal with the ignition switch ON. However, when pressing the shift
lock release button, slider A is forcibly pressed into the shift lock unit. This allows shift lock to be released and
selector lever enables the select operation from the “P” position.
CAUTION:
Do not use the shift lock release button except when the select lever is inoperative even when press-
ing the brake pedal with the ignition switch ON.
JSDIA0119ZZ
JSDIA0120ZZ
JSDIA0121ZZ
SHIFT LOCK SYSTEM
TM-109
< FUNCTION DIAGNOSIS >
[5AT: RE5R05A]
C
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Component Parts Location
INFOID:0000000000957006
*: Shift lock release button becomes operative by removing shift lock cover.
Component Description
INFOID:0000000000957007
1.
Shift lock unit
2.
Shift lock relay
3.
Stop lamp switch
4.
Brake pedal
A.
Control device assembly
B.
Shift lock release button
C.
Slider A
D.
Shift lock solenoid
E.
Slider B
F.
A/T device harness connector
G.
Lock plate
H.
Position pin
I.
Fuse, fusible link and relay box
J.
Brake pedal, upper
K.
A/T console finisher
L.
Shift lock cover *
JPDIA0006ZZ
Component
Function
Control device as-
sembly
Shift lock unit
Shift lock solenoid
Lock plate
The lock plate restricts the position pin stroke by se-
lector button operation according to the shift lock unit
status.
Shift lock release button
Pressing the shift lock release button cancels the
shift lock forcibly.
Position pin
The position pin, linking with the selector button, re-
stricts the selector lever movement.
Shift lock relay
Stop lamp switch
TM-110
< FUNCTION DIAGNOSIS >
[5AT: RE5R05A]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Diagnosis Description
INFOID:0000000000957008
DESCRIPTION
The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM in combination
with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a DTC in
the ECM memory but not the TCM memory.
The second is the TCM original self-diagnosis indicated by the A/T CHECK indicator lamp. The malfunction is
stored in the TCM memory. The detected items are overlapped with OBD-II self-diagnostic items. For detail,
refer to
TM-114, "CONSULT-III Function (TRANSMISSION)"
.
OBD-II FUNCTION
The ECM provides emission-related on board diagnostic (OBD-II) functions for the A/T system. One function
is to receive a signal from the TCM used with OBD-related parts of the A/T system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel. Sensors, switches
and solenoid valves are used as sensing elements.
The MIL automatically illuminates in “One or Two Trip Detection Logic” when a malfunction is sensed in rela-
tion to A/T system parts.
ONE OR TWO TRIP DETECTION LOGIC OF OBD-II
One Trip Detection Logic
If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in
the ECM memory as a DTC. The TCM is not provided with such a memory function.
Two Trip Detection Logic
When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — 1st trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MIL will illuminate. — 2nd trip
The “trip” in the “One or Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation.
OBD-II DIAGNOSTIC TROUBLE (DTC)
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
(
with CONSULT-III or
GST) CONSULT-III or GST (Generic Scan Tool) Examples: P0705, P0720 etc.
These DTC are prescribed by SAE J2012.
(CONSULT-III also displays the malfunctioning component or system.)
• 1st trip DTC No. is the same as DTC No.
• Output of the diagnostic trouble code indicates that the indicated circuit has a malfunction. How-
ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or
occurred in the past and returned to normal.
CONSULT-III can identify them as shown below, therefore, CONSULT-III (if available) is recom-
mended.
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM has a memory function, which stores the driving condition such as fuel system status, calculated
load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-III
or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST. For
detail, refer to
EC-113, "CONSULT-III Function"
.
Only one set of freeze frame data (either 1st trip freeze frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
ON BOARD DIAGNOSTIC (OBD) SYSTEM
TM-111
< FUNCTION DIAGNOSIS >
[5AT: RE5R05A]
C
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longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the ECM mem-
ory is erased.
How to Ease DTC
The diagnostic trouble code can be erased by CONSULT-III, GST or ECM DIAGNOSTIC TEST MODE as
described following.
• If the battery cable is disconnected from the terminal, the DTC will be lost within 24 hours.
• When you erase the DTC, using CONSULT-III or GST is easier and quicker than switching the mode
selector on the ECM.
The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to OBD-II. For details, refer to
.
• Diagnostic trouble codes (DTC)
• 1st trip diagnostic trouble codes (1st trip DTC)
• Freeze frame data
• 1st trip freeze frame data
• System readiness test (SRT) codes
• Test values
How to Erase DTC (With CONSULT-III)
1.
The emission related diagnostic information in the TCM and ECM can be erased by selecting “ALL Erase”
in the “Description” of “FINAL CHECK” mode with CONSULT-III.
How to Erase DTC (With GST)
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2.
TM-113, "Diagnosis Description"
3.
Perform “How to Erase DTC (WITH GST)”. Refer to
EC-101, "Diagnosis Description"
How to Erase DTC (No tools)
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2.
TM-113, "Diagnosis Description"
3.
Perform “How to Erase DTC (No tools)”. Refer to
EC-101, "Diagnosis Description"
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
EC-122, "Diagnosis Tool Function"
.
OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to “MALFUNCTION INDICATOR LAMP (MIL)”. Refer to
EC-101, "Diagnosis Description"
.
MALFUNCTION INDICATOR LAMP (MIL)
Description
Priority
Items
1
Freeze frame data
Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2
Except the above items (Includes A/T related items)
3
1st trip freeze frame data
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