Page 170 of 2898
Diagnostic ProcedureNJAT0077
1 CHECK TCM POWER SOURCE
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
Voltage:
Battery voltage
3. Turn ignition switch to ªOFFº position.
4. Check voltage between TCM terminal 28 and ground.
Voltage:
Battery voltage
SAT461J
OK or NG
OK©GO TO 2.
NG©Check the following items:
+Harness for short or open between ignition switch and TCM (Main harness)
+Ignition switch and fuse
Refer to EL-10, ªPOWER SUPPLY ROUTINGº.
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-168
Page 184 of 2898
SAT898JA
Component Inspection=NJAT0063LINE PRESSURE SOLENOID VALVENJAT0063S01+For removal, refer to AT-351.
Resistance CheckNJAT0063S0101+Check resistance between two terminals.
Solenoid valve Terminal No.Resistance
(Approx.)
Line pressure
solenoid valve4 Ground 2.5 - 5W
SAT899JA
Operation CheckNJAT0063S0102+Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
SAT003K
DROPPING RESISTORNJAT0063S02+Check resistance between two terminals.
Resistance:
10-15W
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Component Inspection
AT-182
Page 185 of 2898

SAT088JA
DescriptionNJAT0264+The PNP switch assembly includes a transmission range
switch.
+The transmission range switch detects the selector lever posi-
tion and sends a signal to the TCM.
TCM TERMINALS AND REFERENCE VALUENJAT0264S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
26 BR/YPNP switch ª1º
position
When setting selector lever to ª1º
position.Battery voltage
When setting selector lever to other
positions.1V or less
27 LPNP switch ª2º
positionWhen setting selector lever to ª2º
position.Battery voltage
When setting selector lever to other
positions.1V or less
34 W/GPNP switch ªDº
positionWhen setting selector lever to ªDº
position.Battery voltage
When setting selector lever to other
positions.1V or less
35 G/WPNP switch ªRº
positionWhen setting selector lever to ªRº
position.Battery voltage
When setting selector lever to other
positions.1V or less
36 GPNP switch ªNº or
ªPº positionWhen setting selector lever to ªNº
or ªPº position.Battery voltage
When setting selector lever to other
positions.1V or less
ON BOARD DIAGNOSIS LOGICNJAT0264S02
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: PNP SW/CIRC
TCM does not receive the correct voltage
signal from the switch based on the gear
position.+Harness or connectors
(The PNP switch circuit is open or
shorted.)
+PNP switch
: P0705
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCHEURO-OBD
Description
AT-183
Page 189 of 2898
2 CHECK PNP SWITCH CIRCUIT (Without CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals 26, 27, 34, 35, 36 and ground while moving selector lever through each posi-
tion.
Voltage:
B: Battery voltage
0: 0V
MTBL0136
SAT425J
OK or NG
OK©GO TO 3.
NG©Check the following items:
+PNP switch
Refer to ªComponent Inspectionº, AT-188.
+Harness for short or open between ignition switch and PNP switch (Main harness)
+Harness for short or open between PNP switch and TCM (Main harness)
+Ignition switch and fuse
Refer to EL-10, ªPOWER SUPPLY ROUTINGº.
+Diode (P, N positions)
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCHEURO-OBD
Diagnostic Procedure (Cont'd)
AT-187
Page 206 of 2898

DescriptionNJAT0279+This is an OBD-II self-diagnostic item and not available in TCM
self-diagnosis.
+This malfunction will not be detected while the O/D OFF indi-
cator lamp is indicating another self-diagnosis malfunction.
+This malfunction is detected when the A/T does not shift into
first gear position as instructed by the TCM. This is not caused
by electrical malfunction (circuits open or shorted) but by
mechanical malfunction such as control valve sticking,
improper solenoid valve operation, etc.
Gear position1234
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
TCM TERMINALS AND REFERENCE VALUENJAT0279S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
11 L/WShift solenoid
valve A
When shift solenoid valve A oper-
ates.
(When driving in ªD
1ºorªD4º.)Battery voltage
When shift solenoid valve A does
not operate.
(When driving in ªD
2ºorªD3º.)1V or less
12 L/YShift solenoid
valve BWhen shift solenoid valve B oper-
ates.
(When driving in ªD
1ºorªD2º.)Battery voltage
When shift solenoid valve B does
not operate.
(When driving in ªD
3ºorªD4º.)1V or less
ON BOARD DIAGNOSTIC LOGICNJAT0279S02This diagnosis monitors actual gear position by checking the torque
converter slip ratio calculated by TCM as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (1st) supposed
by TCM, the slip ratio will be more than normal. In case the ratio
exceeds the specified value, TCM judges this diagnosis malfunc-
tion.
This malfunction will be caused when either shift solenoid valve A
is stuck open or shift solenoid valve B is stuck open.
Gear position supposed by TCM1234
In case of gear position with no malfunctions1234
In case of gear position with shift solenoid valve A stuck open 2* 2 3 3
In case of gear position with shift solenoid valve B stuck open 4* 3 3 4
*: P0731 is detected.
DTC P0731 A/T 1ST GEAR FUNCTIONEURO-OBD
Description
AT-204
Page 212 of 2898
SAT883JB
Operation CheckNJAT0282S0102+Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
DTC P0731 A/T 1ST GEAR FUNCTIONEURO-OBD
Component Inspection (Cont'd)
AT-210
Page 213 of 2898

DescriptionNJAT0283+This is an OBD-II self-diagnostic item and not available in TCM
self-diagnosis.
+This malfunction will not be detected while the O/D OFF indi-
cator lamp is indicating another self-diagnosis malfunction.
+This malfunction is detected when the A/T does not shift into
second gear position as instructed by the TCM. This is not
caused by electrical malfunction (circuits open or shorted) but
by mechanical malfunction such as control valve sticking,
improper solenoid valve operation, etc.
Gear position1234
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
TCM TERMINALS AND REFERENCE VALUENJAT0283S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
12 L/YShift solenoid
valve B
When shift solenoid valve B oper-
ates.
(When driving in ªD
1ºorªD2º.)Battery voltage
When shift solenoid valve B does
not operate.
(When driving in ªD
3ºorªD4º.)1V or less
ON BOARD DIAGNOSTIC LOGICNJAT0283S02This diagnosis monitors actual gear position by checking the torque
converter slip ratio calculated by TCM as follows:
Torque converter slip ratio = A x C/B
A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from ECM
C: Gear ratio determined as gear position which TCM supposes
If the actual gear position is higher than the position (2nd) sup-
posed by TCM, the slip ratio will be more than normal. In case the
ratio exceeds the specified value, TCM judges this diagnosis mal-
function.
This malfunction will be caused when shift solenoid valve B is stuck
open.
Gear position supposed by TCM1234
In case of gear position with no malfunctions1234
In case of gear position with shift solenoid valve B stuck open 4 3* 3 4
*: P0732 is detected.
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: A/T 2ND GR FNCTN
A/T cannot be shifted to the 2nd gear
position even if electrical circuit is good.+Shift solenoid valve B
+Each clutch
+Hydraulic control circuit
: P0732
DTC P0732 A/T 2ND GEAR FUNCTIONEURO-OBD
Description
AT-211
Page 218 of 2898
3 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-212.
OK or NG
OK©INSPECTION END
NG©Check control valve again. Repair or replace control valve assembly.
SAT051KA
Component InspectionNJAT0286SHIFT SOLENOID VALVE BNJAT0286S01+For removal, refer to AT-351.
Resistance CheckNJAT0286S0101+Check resistance between two terminals.
Solenoid valve Terminal No.Resistance
(Approx.)
Shift solenoid
valve B1 Ground 5 - 20W
SAT884JB
Operation CheckNJAT0286S0102+Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
DTC P0732 A/T 2ND GEAR FUNCTIONEURO-OBD
Diagnostic Procedure (Cont'd)
AT-216