Jatco RE4F04B, Manual, Page: 431 / 708

TROUBLE DIAGNOSIS
AT-431
[RE5F22A]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Revision: November 2006 2006 Altima
TROUBLE DIAGNOSIS
PFP:00004
DTC Inspection Priority Chart
ECS009CV
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to
AT-471 .
Fail-Safe
ECS009CW
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is a malfunc-
tion in a main electronic control input/output signal circuit.
In fail-safe mode, a driving condition is selected according to the malfunctioning location, and line pressure is
set at the maximum. For this reason, the customer will be subjected to uncomfortable “slipping” or “poor accel-
eration” of the vehicle.
In that case, handle according to the “diagnostics flow” (Refer to
AT-435 ).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to make driving possible.
NOTE:
Line pressure is set at the maximum in fail-safe mode. Although gear position differs depending on
the type of fail-safe modes, CONSULT-II indicates “5th”.
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above
DTC Malfunction items Fail-safe*
P0500 Vehicle speed signal No learning control.
P0613 TCM processor Fail-safe mode 4
P0705 PNP switch Fail-safe mode 4
P0710 ATF temperature sensor circuit
Sets ATF temperature data at 111
°
C (232
°
F) after 15 minutes. Inhibits
lock-up control.
P0711 ATF temperature sensor function
Sets ATF temperature data at 111
°
C (232
°
F) after 15 minutes. Inhibits
lock-up control.
P0717 Turbine revolution sensor Fail-safe mode 1
P0722 Revolution sensor
Uses vehicle speed signal from combination meter as a substitute. Inhib-
its learning control.
P0726
Engine speed signal input circuit perfor-
mance
Fail-safe mode 1
P0731 1st gear function No 1st gear, no control for N-D shift.
P0732 2nd gear function
Fail-safe mode 1. Also, ECM restricts engine torque to prevent clutch
slipping.
P0733 3rd gear function
Fail-safe mode 1. Also, ECM restricts engine torque to prevent clutch
slipping.
P0734 4th gear function
Fail-safe mode 1. Also, ECM restricts engine torque to prevent clutch
slipping.
P0735 5th gear function
Fail-safe mode 1. Also, ECM restricts engine torque to prevent clutch
slipping.
P0744 Lock-up function Fail-safe mode 1
P0745 Pressure control solenoid valve A
Fail-safe mode 1. Also, ECM restricts engine torque to prevent clutch
slipping.