2006 NISSAN VERSA engine

AT-182
CONTROL UNIT (RAM), CONTROL UNIT (ROM)
Revision: June 20062007 Versa
CONTROL UNIT (RAM), CONTROL UNIT (ROM)PFP:31036
DescriptionUCS005QV
The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the A/T.
On Board Diagnosis LogicUCS005QW

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “CONTROL UNIT (RAM)”, “CONTROL UNIT (ROM)” with CONSULT-II is
detected when TCM memory (RAM) or (ROM) is malfunctioning.
Possible CauseUCS005QX
TCM.
DTC Confirmation ProcedureUCS005QY
CAUTION:
If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
A/T with CONSULT-II.
2. Touch “START”.
3. Start engine.
4. Run engine for at least 2 seconds at idle speed.
5. If the check result is NG, go to AT-182, "
Diagnostic Procedure" .
Diagnostic ProcedureUCS005Q Z
1. CHECK DTC
With CONSULT-II
1. Turn ignition switch ON and select “SELF-DIAG RESULTS” mode for A/T with CONSULT-II.
2. Touch “ERASE”.
3. Perform AT-182, "
DTC Confirmation Procedure" .
Is the
“CONTROL UNIT (RAM)” or “CONTROL UNIT (ROM)” displayed again?
YES >> Replace TCM. Refer to AT- 2 2 8 , "Removal and Installation" .
NO >>INSPECTION END
SAT5 7 4J
BCIA0031E

AT-184
MAIN POWER SUPPLY AND GROUND CIRCUIT
Revision: June 20062007 Versa
TCM terminal data are reference values, measured between each terminal and ground.
Diagnostic ProcedureUCS005R5
1. CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
3. Turn ignition switch OFF.
4. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between ignition switch and TCM terminals 10, 19

Harness for short or open between battery and TCM terminal 28

10A fuse (No.13, located in the fuse block) and 10A fuse (No.49, located in the IPDM E/R)

Ignition switch. Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
Terminal Wire color Item ConditionJudgement stan-
dard
(Approx.)
10 R Power supply
or When turning ignition switch to “ON”. Battery voltage
When turning ignition switch to “OFF”. 0 V
19 R Power supplyWhen turning ignition switch to “ON”. Battery voltage
When turning ignition switch to “OFF”. 0 V
25 B Ground Always 0 V
28 GRPower supply
(memory back-up)Always Battery voltage
48 B Ground Always 0 V
ItemConnec-
torTerminal Judgement standard (Approx.)
Power supply E3110 Battery voltage
19 Battery voltage
Power supply
(memory back-up)E32 28 Battery voltage
SCIA2656E
ItemConnec-
torTerminal Judgement standard (Approx.)
Power supply E3110 0 V
19 0 V
Power supply
(memory back-up)E32 28 Battery voltage
SCIA2657E

PNP, OD SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSI-
TION SIGNAL CIRCUIT
AT-187
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
Diagnostic ProcedureUCS005R8
1. CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to AT- 8 2 , "
SELF-DIAGNOSTIC RESULT MODE" .
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 9 4 , "DTC U1000 CAN COMMUNICATION LINE" .
NO (With CONSULT-II) >>GO TO 2.
NO (Without CONSULT-II) >>GO TO 3.
2. CHECK PNP SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out “P·N”, “R”, “D”, “2” and “1” position switches moving
selector lever to each position.
OK or NG
OK >> GO TO 4.
NG >> Check PNP switch circuit. Refer to AT - 9 7 , "
DTC P0705 PARK/NEUTRAL POSITION (PNP)
SWITCH" .
Item name Condition Display value
PN POSI SWWhen setting selector lever to “N” or “P” posi-
tion.ON
When setting selector lever to other positions. OFF
R POSITION SWWhen setting selector lever to “R” position. ON
When setting selector lever to other positions. OFF
D POSITION SWWhen setting selector lever to “D” positions. ON
When setting selector lever to other positions. OFF
2 POSITION SWWhen setting selector lever to “2” position. ON
When setting selector lever to other positions. OFF
1 POSITION SWWhen setting selector lever to “1” position. ON
When setting selector lever to other positions. OFF
SAT7 0 1J

AT-188
PNP, OD SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSI-
TION SIGNAL CIRCUIT
Revision: June 20062007 Versa
3. CHECK PNP SWITCH CIRCUIT
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground
while moving selector lever through each position. Refer to AT-
98, "Wiring Diagram — AT — PNP/SW" .
B: Battery voltage
0: 0V
OK or NG
OK >> GO TO 4.
NG >> Check PNP switch circuit. Refer to AT- 9 7 , "
DTC P0705
PARK/NEUTRAL POSITION (PNP) SWITCH" .
4. CHECK PNP SWITCH
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Check continuity between PNP switch harness connector termi-
nals.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. CHECK CONTROL CABLE ADJUSTMENT
Check PNP switch again with control cable disconnected from manual shaft of A/T assembly. Refer to test
group 4.
OK or NG
OK >> Adjust control cable. Refer to AT- 2 3 3 , "Adjustment of A/T Position" .
NG >> Check PNP switch (Refer to test group 1) again after adjusting PNP switch (Refer to AT- 2 4 7
).

If OK, INSPECTION END

If NG, repair or replace PNP switch. Refer to AT-246, "Park/Neutral Position (PNP) Switch" .
Selector lever positionTerminal
36 35 34 27 26
“P”, “N” B 0 0 0 0
“R” 0B000
“D” 0 0 B 0 0
“2” 0 0 0 B 0
“1” 0 0 0 0 B
SCIA7162E
Selector lever position Connector Terminal Continuity
“P”
F251 - 2, 3 - 7
Ye s
*Continuity
should not
exist in posi-
tions other
than the
specified
positions. “R” 3 - 8
“N” 1 - 2, 3 - 9
“D” 3 - 6
“2” 3 - 5
“1” 3 - 4
SCIA5588E

PNP, OD SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSI-
TION SIGNAL CIRCUIT
AT-189
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
6. DETECT MALFUNCTIONING ITEM
Check the following.

Harness for short or open between ignition switch and PNP switch

Harness for short or open between PNP switch and TCM

Harness for short or open between PNP switch and combination meter

Harness for short or open between combination meter and TCM

10A fuse (No.51, located in the IPDM E/R)

Combination meter. Refer to DI-5, "COMBINATION METERS" .

Ignition switch. Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out “OVERDRIVE SW”. Check the signal of overdrive con-
trol switch is indicated properly.
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between A/T device harness connector terminal
and ground. Refer to AT- 1 9 3 , "
Wiring Diagram — AT — NON-
DTC" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 8.
Item nameOverdrive control switch
ConditionDisplay value
OVERDRIVE SWDepressed ON
Released OFF
SCIA4730E
Item Connector TerminalOverdrive
control switch
ConditionJudge-
ment
standard
(Approx.)
A/T device harness
connector (Overdrive
control switch)M38 1 - GroundReleasedBattery
voltage
Depressed 0 V
SCIA5336E

AT-190
PNP, OD SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSI-
TION SIGNAL CIRCUIT
Revision: June 20062007 Versa
8. CHECK OVERDRIVE CONTROL SWITCH
1. Turn ignition switch OFF.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness connector termi-
nals. Refer to AT-193, "
Wiring Diagram — AT — NONDTC" .
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
9. DETECT MALFUNCTIONING ITEM
Check the following.

Harness for short or open between combination meter and A/T device harness connector

Harness for short or open between A/T device harness connector and ground

Combination meter. Refer to DI-5, "COMBINATION METERS" .
OK or NG
OK >> GO TO 10.
NG >> Repair or replace damaged parts.
10. CHECK CLOSED THROTTLE POSITION AND WIDE OPEN THROTTLE POSITION SIGNAL CIR-
CUIT
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for A/T with CONSULT-II.
3. Read out “CLOSED THL/SW” and “W/O THRL/P-SW” depressing and releasing accelerator pedal.
Check that the signals of throttle position are indicated properly.
OK or NG
OK >> GO TO 11.
NG >> Check the following. If any items are damaged, repair or replace damaged parts.

Accelerator pedal position sensor. Refer toEC-532, "DTC P2138 APP SENSOR" .
Item Connector TerminalOverdrive control
switch conditionContinuity
A/T device harness con-
nector (Overdrive con-
trol switch)M38 1 - 2Released No
Depressed Yes
SCIA5330E
SCIA4731E
Accelerator pedal conditionData monitor
CLOSED THL/SW W/O THRL/P-SW
Released ON OFF
Fully depressed OFF ON

AT-192
SHIFT POSITION INDICATOR CIRCUIT
Revision: June 20062007 Versa
SHIFT POSITION INDICATOR CIRCUITPFP:24810
DescriptionUCS006XM
TCM sends the switch signals to combination meter via CAN communication line. Then selector lever position
is indicated on the shift position indicator.
CONSULT-II Reference ValueUCS006XN
Diagnostic ProcedureUCS006XO
1. CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II and read out the value of
“SLCT LVR POSI”.
3. Check that the following three positions or indicators are same.
–Actual position of the selector lever
–“SLCT LVR POSI” on CONSULT-II screen
–Shift position indicator in the combination meter
OK or NG
OK >>INSPECTION END
NG >> Check the following.
SHIFT POSITION INDICATOR SYMPTOM CHART
Item name Condition Display value
SLCT LVR POSIWhen setting selector lever to “N” or “P” positions. N · P
When setting selector lever to “R” position. R
When setting selector lever to “D” position. D
When setting selector lever to “2” position. 2
When setting selector lever to “1” position. 1
Items Presumed location of trouble
Actual position does not change.Park/neutral position (PNP) switch

Refer to AT- 9 7 , "DTC P0705 PARK/NEUTRAL POSITION
(PNP) SWITCH" .
A/T main system (Fail-safe function actuated)

Refer to AT- 8 2 , "SELF-DIAGNOSTIC RESULT MODE" and
AT- 9 0 , "
Diagnostic Procedure Without CONSULT-II" .
Shift position indicator in the combination meter does not indicate
any position.
Perform the self-diagnosis for A/T and the combination meter.

Refer to AT - 8 2 , "SELF-DIAGNOSTIC RESULT MODE" and DI-
5, "COMBINATION METERS" . Actual position changes, but the shift position indicator in the
combination meter does not change.
Actual position differs from the shift position indicator in the com-
bination meter.
Shift position indicator in the combination meter does not indicate
specific position only.Check the combination meter.

Refer to DI-5, "COMBINATION METERS" .

AT-198
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: June 20062007 Versa
OD OFF Indicator Lamp Does Not Come OnUCS005UW
SYMPTOM:
OD OFF indicator lamp does not come on for about 2 seconds when turning ignition switch to ON.
DIAGNOSTIC PROCEDURE
1. CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to AT- 8 2 , "
SELF-DIAGNOSTIC RESULT MODE" .
Is a malfunction in CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT-94, "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
Refer to AT-183, "
Wiring Diagram — AT — MAIN" .
3. Turn ignition switch OFF.
4. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following.

Harness for short or open between ignition switch and TCM connector terminals 10, 19. Refer to AT-183,
"Wiring Diagram — AT — MAIN" .

Harness for short or open between battery and TCM connector terminal 28. Refer to AT-183, "Wiring Dia-
gram — AT — MAIN" .

10A fuse (No.13, located in the fuse block) and 10A fuse (No.49, located in the IPDM E/R). Refer to AT -
183, "Wiring Diagram — AT — MAIN" .

Ignition switch. Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
Item Connector Terminal Judgement standard (Approx.)
TCM connectorE3110 -
Ground
Battery voltage 19 -
Ground
E3228 -
Ground
SCIA2656E
Item Connector Terminal Judgement standard (Approx.)
TCM connectorE3110 -
Ground0V
19 -
Ground0V
E3228 -
GroundBattery voltage
SCIA2657E