NISSAN LATIO 2009 Service Repair Manual

CVT
N
O P
ENG SPEED (rpm) — X
SLIP REV (rpm) — X Difference between engine speed and primary
pulley speed
GEAR RATIO — X
G SPEED (G) — —
ACC PEDAL OPEN (0.0/8) X X Degree of opening for accelerator recognized by
the TCM
For fail-safe operation, the specific value used for
control is displayed.
TRQ RTO — —
SEC PRESS (MPa) — X
PRI PRESS (MPa) — X
ATFTEMP COUNT — X Means CVT fluid temperature. Actual oil temper-
ature ( °C) cannot be checked unless a numeric
value is converted. Refer to CVT-12 .
DSR REV (rpm) — —
DGEAR RATIO — —
DSTM STEP (step) — —
STM STEP (step) — X
LU PRS (MPa) — —
LINE PRS (MPa) — —
TGT SEC PRESS (MPa) — —
ISOLT1 (A) — X Torque converter clutch solenoid valve output
current
ISOLT2 (A) — X Pressure control solenoid valve A (line pressure
solenoid valve) output current
ISOLT3 (A) — X Pressure control solenoid valve B (secondary
pressure solenoid valve) output current
SOLMON1 (A) X X Torque converter clutch solenoid valve monitor
current
SOLMON2 (A) X X Pressure control solenoid valve A (line pressure
solenoid valve) monitor current
SOLMON3 (A) X X Pressure control solenoid valve B (secondary
pressure solenoid va lve) monitor current
INH SW3M (ON/OFF) X — PNP switch 3 ON-OFF status monitor
INH SW4 (ON/OFF) X — PNP switch 4 ON-OFF status
INH SW3 (ON/OFF) X — PNP switch 3 ON-OFF status
INH SW2 (ON/OFF) X — PNP switch 2 ON-OFF status
INH SW1 (ON/OFF) X — PNP switch 1 ON-OFF status
BRAKE SW (ON/OFF) X X Stop lamp switch (Signal input with CAN comuni-
cation)
Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU

CVT
N
O P
Diagnosis Procedure
without CONSULT-III INFOID:0000000004666893
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-612, " Generic Scan Tool (GST) Function " .
Frequency (Hz) — —
The value measured by the pulse probe is dis-
played.
DUTY-HI (high) (%) — —
DUTY-LOW (low) (%) — —
PLS WIDTH-HI (ms) — —
PLS WIDTH-LOW (ms) — — Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU

Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”.

CVT
N
O P
Wiring Diagram - CVT - CAN
INFOID:0000000004666898
TCM TERMINALS AND REFERENCE VALUES Refer to CVT-49, " TCM Terminal and Reference Value " .

“ U1000 CAN COMM CIRCUIT ” indicated?
YES >> Print out CONSULT-III screen, go to LAN section. Refer to
LAN-26, " CAN System Specification
Chart " .
NO >> INSPECTION END

CVT
N
O P
DTC U1010 TRANSMISSION
CONTROL MODULE (CAN)
Description INFOID:0000000004666900
CAN (Controller Area Network) is a serial communication li ne for real time application. It is an on-vehicle mul-
tiplex communication line with high data communica tion speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicl e, and each control unit shares information and links
with other control units during operation (not independent ). In CAN communication, control units are con-
nected with 2 communication lines (CAN-H line, CAN-L li ne) allowing a high rate of information transmission
with less wiring. Each control unit transmits/recei ves data but selectively reads required data only.
On Board Diagnosis Logic INFOID:0000000004666901
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U1010 CONTROL UNIT(CAN)” with CONSULT-III is detected when TCM cannot
communicate to other control units.
Possible Cause INFOID:0000000004666902
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure INFOID:0000000004666903
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESU LTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to CVT-63, " Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis Procedure INFOID:0000000004666904DTC Confirmation Procedure " .
Is any malfunction of the “ U1010 CONTROL UNIT(CAN) ” indicated?
YES >> Replace the TCM. Refer to
CVT-170, " Removal and Installation " .
NO >> INSPECTION END

Diagnosis Procedure " .
Item name Condition Display value
STRTR RLY OUT Selector lever in “P
” and “N” positions ON
Selector lever in other positions OFF
STRTR RLY MON Selector lever in “P
” and “N” positions ON
Selector lever in other positions OFF

CVT
N
O P
Wiring Diagram - CVT - STSIG
INFOID:0000000004666910
TCM TERMINALS AND REFERENCE VALUES Refer to CVT-49, " TCM Terminal and Reference Value " .

OK >> GO TO 3.
NG >> GO TO 2. .
• Open or short-circuit in the harness between TCM and the starter relay. Refer to CVT-65, " Wiring Diagram -
CVT - STSIG " .
• Ground circuit for the starter relay. Refer to SC-11, " Wiring Diagram - START - " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace damaged parts. DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 4. TCM Terminal and Reference Value " .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG OK >>
INSPECTION END
NG >> Repair or replace damaged parts.
Item name Condition Display value
STRTR RLY OUT Selector lever in “P” and
“N” positions ON
Selector lever in other po-
sitions OFF
STRTR RLY MON Selector lever in “P” and
“N” positions ON
Selector lever in other po-
sitions OFFTerminal Item Condition Data (Approx.)
24 Starter
relay Selector lever in “N” and “P”
positions Battery voltage
Selector lever in other posi-
tions 0 V