Infiniti EX35. Manual — part 1431
TM-112
< ECU DIAGNOSIS >
[5AT: RE5R05A]
TCM
this happens, switch OFF the ignition switch for 10 seconds. Then switch it ON again to return to the normal
shift pattern. When the customer's vehicle has returned to normal, handle according to the “Work Flow” (Refer
to
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to make driving possible.
Vehicle Speed Sensor
Signals are input from two systems - from vehicle speed sensor A/T (revolution sensor) installed on the A/T
and from unified meter and A/C amp. so normal driving is possible even if there is a malfunction in one of the
systems. If vehicle speed sensor A/T (revolution sensor) has unusual cases, 5th gear and manual mode are
prohibited.
Accelerator Pedal Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving possible. If there are malfunctions in tow systems, the
engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according
to a pre-determined accelerator angle to make driving possible. If there are malfunctions in tow systems, the
accelerator opening angle is controlled by the idle signal transmitted from the ECM which is based on input
indicating either idle condition or off-idle condition (pre-determined accelerator opening) in order to make driv-
ing possible.
PNP Switch
In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched OFF, the
starter relay is switched OFF (starter is disabled), the back-up lamp relay switched OFF (back-up lamp is OFF)
and the position is fixed to the “D” position to make driving possible.
Starter Relay
The starter relay is switched OFF. (Starter is disabled.)
A/T Interlock
• If there is an A/T interlock judgment malfunction, the A/T is fixed in 2nd gear to make driving possible.
NOTE:
When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed,
but this is not a turbine revolution sensor malfunction.
• When interlock is detected at the 3rd gear or more, it is locked at the 2nd gear.
A/T 1st Engine Braking
When there is an A/T first gear engine brake judgment malfunction, the low coast brake solenoid is switched
OFF to avoid the engine brake operation.
Line Pressure Solenoid
The solenoid is switched OFF and the line pressure is set to the maximum hydraulic pressure to make driving
possible.
Torque Converter Clutch Solenoid
The solenoid is switched OFF to release the lock-up.
Low Coast Brake Solenoid
When a malfunction (electrical or functional) occurs, in order to make driving possible. If the solenoid is ON,
the A/T is held in 2nd gear. If the solenoid is OFF, the A/T is held in 4th gear. (Engine brake is not applied in
1st and 2nd gear.)
Input Clutch Solenoid
If a malfunction (electrical or functional) occurs with the solenoid either ON or OFF, the A/T is held in 4th gear
to make driving possible.
Direct Clutch Solenoid
If a malfunction (electrical or functional) occurs with the solenoid either ON or OFF, the A/T is held in 4th gear
to make driving possible.
Front Brake Solenoid
If a malfunction (electrical or functional) occurs with the solenoid ON, in order to make driving possible. The A/
T is held in 5th gear. If the solenoid is OFF, the A/T is in 4th gear.
TCM
TM-113
< ECU DIAGNOSIS >
[5AT: RE5R05A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
High and Low Reverse Clutch Solenoid
If a (electrical or functional) malfunction occurs with the solenoid either ON or OFF, the A/T is held in 4th gear
to make driving possible.
Turbine Revolution Sensor 1 or 2
The control is the same as if there were no turbine revolution sensors, 5th gear and manual mode are prohib-
ited.
DTC Inspection Priority Chart
INFOID:0000000003130577
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000 CAN COMM CIRCUIT” is displayed with other DTC, first perform the trouble diagnosis
for “DTC U1000 CAN COMMUNICATION LINE”. Refer to
.
DTC Index
INFOID:0000000003130578
NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to
Priority
Detected items (DTC)
1
U1000 CAN communication line
2
Except above
DTC
*2
Items
(CONSULT-III screen terms)
Reference page
MIL
*1
, “ENGINE” with
CONSULT-III or GST
CONSULT-III
only “TRANSMIS-
SION”
—
P0615
STARTER RELAY/CIRC
P0700
P0700
TCM
P0705
P0705
PNP SW/CIRC
P0710
P1710
ATF TEMP SEN/CIRC
P0717
P0717
TURBINE REV S/CIRC
P0720
P0720
VEH SPD SEN/CIR AT
P0725
P0725
ENGINE SPEED SIG
P0731
P0731
A/T 1ST GR FNCTN
P0732
P0732
A/T 2ND GR FNCTN
P0733
P0733
A/T 3RD GR FNCTN
P0734
P0734
A/T 4TH GR FNCTN
P0735
P0735
A/T 5TH GR FNCTN
P0740
P0740
TCC SOLENOID/CIRC
P0744
P0744
A/T TCC S/V FNCTN
P0745
P0745
L/PRESS SOL/CIRC
—
P1705
TP SEN/CIRC A/T
—
P1721
VEH SPD SE/CIR-MTR
P1730
P1730
A/T INTERLOCK
—
P1731
A/T 1ST E/BRAKING
P1752
P1752
I/C SOLENOID/CIRC
P1757
P1757
FR/B SOLENOID/CIRC
P1762
P1762
D/C SOLENOID/CIRC
P1767
P1767
HLR/C SOL/CIRC
TM-114
< ECU DIAGNOSIS >
[5AT: RE5R05A]
TCM
*1: Refer to
TM-36, "Diagnosis Description"
*2: These numbers are prescribed by SAE J2012.
P1772
P1772
LC/B SOLENOID/CIRC
P1774
P1774
LC/B SOLENOID FNCT
—
P1815
MANU MODE SW/CIRC
U1000
U1000
CAN COMM CIRCUIT
DTC
*2
Items
(CONSULT-III screen terms)
Reference page
MIL
*1
, “ENGINE” with
CONSULT-III or GST
CONSULT-III
only “TRANSMIS-
SION”
SYSTEM SYMPTOM
TM-115
< SYMPTOM DIAGNOSIS >
[5AT: RE5R05A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
SYMPTOM DIAGNOSIS
SYSTEM SYMPTOM
Symptom Table
INFOID:0000000003130579
• The diagnostics item numbers show the sequence for inspection. Inspect in order from item 1.
• Overhaul and inspection inside the A/T only if A/T fluid condition is NG. Refer to
No.
Item
Symptom
Condition
Diagnostic item
Reference
page
1
Shift
Shock
Large shock. (“N”
→
“D” position)
ON vehicle
1. Engine idle speed
2. Engine speed signal
3. Accelerator pedal position sensor
4. A/T position
(2WD),
(AWD)
5. A/T fluid temperature sensor
6. Front brake solenoid valve
7. CAN communication line
8. A/T fluid level and state
9. Line pressure test
10. Control valve with TCM
OFF vehicle
11. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
2
Shock is too large
when changing D
1
→
D
2
or M1
→
M2.
ON vehicle
1. Accelerator pedal position sensor
2. A/T position
(2WD),
(AWD)
3. Direct clutch solenoid valve
4. CAN communication line
5. Engine speed signal
6. Turbine revolution sensor
7. Vehicle speed sensor A/T and vehicle speed sensor MTR
8. A/T fluid level and state
9. Control valve with TCM
OFF vehicle
10. Direct clutch
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