speed SUZUKI GRAND VITARA 2001 2.G Service Manual PDF
[x] Cancel search | Manufacturer: SUZUKI, Model Year: 2001, Model line: GRAND VITARA, Model: SUZUKI GRAND VITARA 2001 2.GPages: 801, PDF Size: 12.15 MB
Page 427 of 801
YH4
GRAND
VITARA
AUTOMATIC TRANSMISSION (4 A / T) 7B1-25
DIAGNOSTIC TROUBLE CODE (DTC) TABLE (A / T RELATED CODE) (cont'd)
DTC NO.MIL
Using
scan toolNot using
scan toolDETECTED ITEMDETECTING CONDITION
Vehicle
without
monitor
connectorVehicle
with
monitor
connector
*1
P0756
Not
applicableShift solenoid B (#2)
performance or stuck
offGear change control from PCM to
A / T does not agree with actual gear
position of A / T.2 driving
cyclesNot
applicable
P075863
64Shift solenoid B (#2)
electricalMonitor signal OFF is detected
when shift solenoid B (#2) is ON or
monitor signal ON is detected when
it is OFF.1 driving
cycleNot
applicable
*1
P1875
Not
applicable4WD low switch circuit
malfunctionDifference between vehicle speed
detected by VSS and vehicle speed
detected by output speed sensor
and compensated by 4WD low
switch is larger than specification.2 driving
cyclesNot
applicable
NOTE:
*1: Applicable to vehicle without monitor connector only.
FAIL-SAFE TABLE
When any of the following DTC is detected, ECM (PCM) enters fail-safe mode as long as malfunction continues
to exist but that mode is canceled when ECM detects normal condition after that.
DTC NO.
Using
scan toolNot using
scan toolTROUBLE AREAFAIL SAFE OPERATION
P0177
P011814
15ECT SENSOREach control except 4-A / T is permitted on the basis of
30.1C engine coolant temp.
4-A / T control is performed assuming 31C (engine warmed
up) or higher after 15 min. from engine start.
P0122
P012321
22TP SENSOREach control except 4-A / T is performed on the basis of 124
throttle valve opening.
4-A / T control is performed on the basis of 0 throttle valve
opening.
P070572TR SWITCHA / T control is performed in priority order of L, 2, N, D, R
and P.
P072075OUTPUT SPEED
SENSOR CIRCUIT
MALFUNCTIONA / T control is performed by using signal from VSS.
P075361
62SHIFT SOLENOID
A (#1)A / T control using 3rd gear is performed when D range, 1st
or 2nd gear is used.
TCC solenoid OFF.
P075863
64SHIFT SOLENOID
B (#2)A / T control using 4th gear is performed when D range 2nd
or 3rd gear is used.
When both shift solenoid A (#1) and B (#2) failed
simultaneously, A / T control using 4th gear is always
performed in D range.
TCC solenoid OFF.
P074365
66TCC (Lock-up)
SOLENOIDTCC (lock-up) solenoid OFF.
Page 430 of 801
YH4
GRAND
VITARA
7B1-28 AUTOMATIC TRANSMISSION (4 A / T)
Transmission fluid Running condition Running condition Gear shift
TROUBLE DIAGNOSIS TABLE 1
ConditionPossible CauseCorrection
TCC does not operateBrake pedal (stop lamp) switch or its
circuit faulty (H25 engine only)
4WD low switch or its circuit faulty
Engine coolant temp. sensor or its
circuit faulty
Cruise control signal circuit faulty
(if equipped)DIAGNOSTIC FLOW TABLE A-1
Gear does not change
to 4thO / D cut switch or its circuit faulty
4WD low switch or its circuit faulty
Engine coolant temp. sensor or its
circuit faulty
Cruise control signal circuit faulty
(if equipped)DIAGNOSTIC FLOW TABLE A-2
TROUBLE DIAGNOSIS TABLE 2
ConditionPossible CauseCorrection
Low fluid pressureClogged oil pump strainer
Malfunction of pressure regulator valveWash strainer.
Overhaul valve body.
High fluid pressurePressure regulator valveOverhaul valve body.
Unable to run in all
rangeRegulator valve stickReplace.
Clogged oil strainerWash strainer.
Seized or broken planetary gearRepair or replace.
Faulty manual valveReplace.
Poor 1st speed run-
ning or excessive
slippage in ªDº or
ª2ºFaulty 1±2 shift valveReplace.
Poor 1±2 shift, ex-
ili
Regulator valve stickingReplace.
cessive slippage1±2 shift valve stickingReplace.
Shift solenoid valve-B stickingReplace.
Intermediate coast modulator valve stick-
ingReplace.
Poor 2±3 shift, ex-
ili
2±3 shift valve stickingReplace.
cessive slippageShift solenoid valve-A stickingReplace.
Poor start or surg-
ing in ªDº rangeRegulator valve stickingReplace.
Page 432 of 801
YH4
GRAND
VITARA
7B1-30 AUTOMATIC TRANSMISSION (4 A / T)
Running condition Gear shift Abnormal
noise
ConditionPossible CauseCorrection
Poor 1st speed run-
ning or excessive
slippage in ªDº or ª2ºFluid pressure leakage from forward clutch
due to wear or breakage of O/D case seal
ringReplace.
Overdrive clutch slippingReplace.
Unable to run or ex-
cessive slippage in
ªLº rangeFluid pressure leakage of forward clutch
due to wear or breakage of O/D case seal
ringReplace.
Reverse brake disc slippingReplace.
Broken brake piston O-ringReplace.
Unable to run or ex-
cessive slippage in
ªRº rangeFluid pressure leakage to direct clutch due
to wear or breakage of center support seal
ringReplace.
Worn direct clutchReplace.
Poor 1±2 shift, ex-
cessive slippageFluid pressure leakage to overdrive clutch
due to wear or breakage of O/D case seal
ringReplace.
Faulty second brakeReplace.
Broken O-ring of second brake pistonReplace.
Faulty second coast brake (in ª2º range)Replace.
Poor 2±3 shift, ex-
cessive slippageFluid pressure leakage to overdrive clutch
due to wear or breakage of O/D case seal
ringReplace.
Worn direct clutch bushingReplace.
Direct clutch slippingReplace.
Foreign material caught in direct clutch pis-
ton check ballReplace.
Poor start or surging
in ªDº rangeFluid pressure leakage of forward clutch
due to wear or breakage of O/D case seal
ringReplace.
Malfunction of forward clutchReplace.
Poor 3±4 shift, ex-
ili
Faulty overdrive brakeReplace.
cessive slippageFaulty overdrive clutchReplace.
Poor start or judder-
ing in ªRº rangeFluid pressure leakage of direct clutch due
to wear or breakage of oil center support
seal ringReplace.
Worn direct clutchReplace.
Excessive shock on
1± 2 shiftFaulty one-way clutchReplace.
Non operate lock-up
systemFaulty torque converterReplace.
Abnormal noise in
ªPº or ªNº rangeWorn oil pumpReplace.
SCAN TOOL DATA-Refer to SECTION 6 / 6-1.
INSPECTION OF PCM AND ITS CIRCUIT-Refer to SECTION 6 / 6-1.
WIRE HARNESS AND CONNECTORS-Refer to SECTION 6 / 6-1.
Page 442 of 801
YH4
GRAND
VITARA
7B1-40 AUTOMATIC TRANSMISSION (4 A / T)
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
Transmission range switch signal (P, R, N, D, 2 or L)
is not inputted for 25 sec. at 60 km/h (38 mph) or
higher vehicle speed.
or
Multiple signals are inputted simultaneously for 25
sec.
(2 driving cycles detection logic)Transmission range sensor (switch) maladjusted.
Transmission range sensor (switch) or its circuit mal-
function.
PCM
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC and start engine.
3) Shift A / T selector lever to each of L, 2, D, N, R and P ranges for 30 seconds each.
4) Increase vehicle speed to about 70 km / h (45 mph) in D range.
5) Keep driving above vehicle speed for 30 seconds.
6) Release accelerator pedal, decrease vehicle speed and stop vehicle.
7) Check DTC and / or pending DTC.
Page 444 of 801
YH4
GRAND
VITARA
G16/J20 Engines H25 Engine
G16/J20 Engines
H25 Engine
1. PCM
2. A / T input speed sensor 11 1 0
Bl / Y Bl / G16 8
Bl / Y Bl / G
7B1-42 AUTOMATIC TRANSMISSION (4 A / T)
DTC P0715 (DTC NO.76) INPUT / TURBINE SPEED SENSOR CIRCUIT MALFUNCTION
WIRING DIAGRAM
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
Input speed sensor detected speed is lower than spec-
ification while vehicle running under all of the following
conditions:
at higher than 10 km / h (7 mph) with 1st gear in D
range for 1 sec. or more.
at higher than 20 km / h (13 mph) with 2nd gear in D
range for 2 sec. or more.
at higher than 30 km / h (20 mph) with 3rd gear in D
range for 2 sec. or more.
(2 driving cycles detection logic)Input speed sensor and its circuit
PCM
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC.
3) Start engine and turn O / D cut switch ON.
4) Shift select lever to D range and start vehicle.
5) Keep vehicle speed at higher than 10 km / h (7 mph) with 1st gear in D range for 2 sec. or more.
6) Increase vehicle speed and keep it at higher than 20 km / h (13 mph) with 2nd gear in D range for 2 sec. or more.
7) Increase vehicle speed and keep it at higher than 30 km / h (20 mph) with 3rd gear in D range for 2 sec. or more.
8) Stop vehicle.
9) Check DTC and / or pending DTC.
Page 445 of 801
YH4
GRAND
VITARA
Oscilloscope waveforms
2V/Div.
Waveforms at specified idle
speed in ªPº range5ms / Div.
AUTOMATIC TRANSMISSION (4 A / T) 7B1-43
TROUBLESHOOTING (DTC P0715)
STEPACTIONYESNO
1Was ªA / T DIAG. FLOW TABLEº performed?Go to Step 2.Go to ªA / T DIAG.
FLOW TABLEº.
2Input speed sensor circuit check:
1) Remove PCM cover.
2) With ignition switch OFF, disconnect PCM
connectors.
3) Check for proper connection to input speed sensor
at C51-1-10 and C51-1-11 terminals for G16/J20
(at C51-1-8 and C51-1-16 terminals for H25)
4) If OK, check resistance of sensor circuit.
Resistance between C51-1-10
and C51-1-11 for G16 / J20
(C51-1-8 and C51-1-16 for H25):530 ± 650 at
20C, 68F
Resistance between C51-1-10 /
C51-1-11 for G16 / J20 (C51-1-8 /
C51-1-16 for H25) and ground: 1 M or more
Are check results satisfactory?Go to Step 4.Go to Step 3.
3Input speed sensor check:
1) With ignition switch OFF, disconnect input speed
sensor connector.
2) Check for proper connection to input speed sensor
at each terminals.
3) If OK, then check resistance of input speed sensor.
Are measured values as specified in Step 2?ªBl / Gº or ªBl / Yº wire
open or shorted to
ground.Replace input speed
sensor.
4Check visually input speed sensor and overdrive clutch
drum for the followings.
No damage
No foreign material attached
Correct installation
Are they in good condition?Intermittent trouble
or faulty PCM.
Check for intermittent
referring to
ªIntermittent and
Poor Connectionº in
Section 0A.Clean, repair or
replace.
Reference
Connect oscilloscope between C51-1-11 (+) and C51-1-10 (±) for
G16 / J20 (C51-1-16 (+) and C51-1-8 (±) for H25) of PCM connector
connected to PCM and check input speed sensor signal.
Page 446 of 801
YH4
GRAND
VITARA
G16/J20 Engines H25 Engine
G16/J20 Engines
H25 Engine
1. PCM
2. A / T output speed sensor 23
22
WOr10 9
WOr
7B1-44 AUTOMATIC TRANSMISSION (4 A / T)
DTC P0720 (DTC NO.75) OUTPUT SPEED SENSOR CIRCUIT MALFUNCTION
WIRING DIAGRAM
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
With 4WD LOW switch OFF, no output speed sensor
signal is inputted while vehicle speed sensor signal
are inputted.
or
With 4WD LOW switch OFF, no output speed sensor
signal is inputted while engine running at higher than
specified engine speed with ªDº range.
(2 driving cycles detection logic)A / T output speed sensor or its circuit
PCM
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC.
3) Start engine and shift transfer lever to ª2Hº or ª4Hº range.
4) Drive vehicle at 40 km / h (25 mph) or more for longer than 10 sec. (or higher than 3500 rpm engine speed with
D range for longer than 10 sec.)
5) Stop vehicle and check DTC and / or pending DTC.
Page 447 of 801
YH4
GRAND
VITARA
Oscilloscope waveforms
2 V/Div.
5 ms / Div.
Waveforms at about 25 mph, 40 km / h
AUTOMATIC TRANSMISSION (4 A / T) 7B1-45
TROUBLESHOOTING (DTC P0720)
STEPACTIONYESNO
1Was ªA / T DIAG. FLOW TABLEº performed?Go to Step 2.Go to ªA / T DIAG.
FLOW TABLEº.
2Output speed sensor circuit check:
1) Remove PCM cover.
2) With ignition switch OFF, disconnect PCM
connectors.
3) Check for proper connection to output speed sensor
at C51-1-22 and C51-1-23 terminals for G16 / J20
(at C51-1-9 and C51-1-10 terminals for H25).
4) If OK, check resistance of sensor circuit.
Resistance between C51-1-22
and C51-1-23 for G16 / J20
(C51-1-9 and C51-1-10 for H25): 387 ± 473 at
20 C, 68 F
Resistance between C51-1-22 /
C51-1-23 for G16/J20 (C51-1-9 /
C51-1-10 for H25) and ground: 1 M or more
Are check results satisfactory?Go to Step 4.Go to Step 3.
3Output speed sensor check:
1) With ignition switch OFF, disconnect output speed
sensor connector.
2) Check for proper connection to output speed sensor
at each terminals.
3) If OK, then check resistance of output speed sensor.
Are measured values as specified in Step 2?ªOrº or ªWº wire
open or shorted to
ground.Replace output
speed sensor.
4Check visually output speed sensor and sensor rotor
for the followings.
No damage
No foreign material attached
Correct installation
Are they in good condition?Intermittent trouble
or faulty PCM.
Check for intermittent
referring to
ªIntermittent and
Poor Connectionº in
Section 0A.Clean, repair or
replace.
Reference
Connect oscilloscope between C51-1-23 (+) and C51-1-22 (±) for
G16/J20 (C51-1-10 (+) and C51-1-9 (±) for H25) of PCM connector
connected to PCM and check output speed sensor signal.
Page 448 of 801
YH4
GRAND
VITARA
7B1-46 AUTOMATIC TRANSMISSION (4 A / T)
DTC P0741 TCC (LOCK-UP) SOLENOID VALVE PERFORMANCE OR STUCK OFF
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
While running in 2nd or 4th gear, D range, TCC control
of PCM does not agree with actual operation of trans-
mission TCC even though solenoid valve is electrically
in good condition.
(2 driving cycles detection logic)TCC (lock-up) solenoid valve stuck
TCC control valve stuck
Valve body fluid passage clogged
TCC faulty
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool and check fuel level meter
indication is 1/4 or more.
3) Start engine, warm it up to normal operating temperature and shift transfer lever to ª2Hº or ª4Hº range.
4) Increase vehicle speed with D range, and check that gear position changes from 1st to 2nd and keep driving
about 20 mph, 30 km/h in 2nd of ªDº range for 10 seconds. (Throttle valve should be not at idle position and
the opening should be kept constant in this step.)
5) Keep driving about 50 mph, 80 km/h in 4th of ªDº range for 10 seconds.
6) Release accelerator pedal, decrease vehicle speed and stop vehicle.
7) Check pending DTC and DTC by using scan tool.
TROUBLESHOOTING
STEPACTIONYESNO
1Was ªA / T DIAG. FLOW TABLEº performed?Go to Step 2.Go to ªA / T DIAG.
FLOW TABLEº.
2TCC solenoid valve operation check:
1) Check TCC solenoid valve operation referring to
ªSolenoid Valves Operation Checkº in this section.
Is it in good condition?Go to Step 3.Faulty TCC solenoid
valve.
3Valve body check:
1) Check valve body referring to ªUnit Repairº in this
section.
Is it in good condition?Faulty torque
converter.Faulty valve body.
Page 449 of 801
YH4
GRAND
VITARA
G16/J20 Engines H25 Engine
G16/J20 Engines
H25 Engine
1. PCM
2. Shift solenoid-A
3. Shift solenoid-B
4. TCC solenoid
AUTOMATIC TRANSMISSION (4 A / T) 7B1-47
DTC P0743 (DTC NO.65 / 66) TCC (LOCK-UP) SOLENOID ELECTRICAL
WIRING DIAGRAM
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITIONTROUBLE AREA
Voltage at terminal C51-1-8 for G16 / J20 (C51-1-2 for
H25) of PCM is high while TCC solenoid OFF is com-
manded or low while TCC solenoid ON is comman-
ded.TCC (lock-up) solenoid valve
TCC (lock-up) solenoid valve circuit
PCM
DTC CONFIRMATION PROCEDURE
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester, on a level road.
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC.
3) Start engine, warm it up to normal operating temperature and shift transfer lever to ª2Hº or ª4Hº range.
4) Shift selector lever in D range and keep it there for 10 seconds.
5) Increase vehicle speed to about 80 km / h (50 mph) in 4th gear and in D range.
6) Keep driving at above speed for 20 seconds.
7) Release accelerator pedal, decrease vehicle speed and stop vehicle.
8) Check DTC and / or pending DTC.