2001 SUZUKI GRAND VITARA Power

AUTOMATIC TRANSMISSION (4 A/T) 7B1-25
Table B-4 : “POWER” Light Circuit Check (“POWER” Light Comes ON
Steadily)
WIRING DIAGRAM
Refer to “TABLE B-3” in this section.
TROUBLESHOOTING
[A] for Step 1/[B] for Step 4Step Action Yes No
1 Check Power/Normal change switch position.
Is switch button at Normal position?Go to Step 2. Set Power/Normal
change switch at Nor-
mal position.
2 Check lamp circuit for short.
1) Turn ignition switch OFF and disconnect PCM
connectors.
2) Turn ignition switch ON.
Does “POWER” lamp come ON steadily?“GRY/BLU” circuit
shorted to ground.Go to Step 3.
3 Check Power/Normal change switch circuit.
1) Check resistance between terminal E61-31 of dis-
connected PCM connector and body ground with
P/N change switch OFF.
Is continuity indicated?Go to Step 4. Check PCM ground
circuit for open.
If ground circuit is OK,
substitute a known-
good PCM and
recheck.
4 Check Power/Normal change switch for operation.
1) Remove Power/Normal change switch.
2) Check continuity between switch terminals “4” and
“5” under each condition below.
Normal position: No continuity
Power position: Continuity.
Is check result satisfactory?“ORN/BLU” circuit
shorted to ground.Replace Power/Normal
change switch.

AUTOMATIC TRANSMISSION (4 A/T) 7B1-35
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool.
3) Start engine, warm it up to normal operating temperature and shift transfer lever to “2H” or “4H” 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 mile/h) 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.
TROUBLESHOOTING
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent 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.
Step Action Yes No
1Was “A/T DIAGNOSTIC FLOW TABLE” in this
section performed?Go to Step 2. Go to “A/T DIAGNOSTIC
FLOW TABLE” in this sec-
tion.
2 Check TCC solenoid circuit for short.
1) Turn ignition switch OFF and disconnect
PCM connectors.
2) Check for proper connection to PCM at ter-
minal C51-1-8.
3) If OK, then turn ignition switch ON and mea-
sure voltage between terminal C51-1-8 of
disconnected PCM connector and ground.
Is it about 0 V?Go to Step 3.“GRN/YEL” circuit shorted
to power circuit.
3 Check TCC solenoid circuit for open or short.
1) Turn ignition switch OFF.
2) Measure resistance between terminal C51-
1-8 of disconnected PCM connector and
ground.
Is it 11 – 15 Ω (at 20 °C (68 °F))?Intermittent trouble or
faulty PCM.
Check for intermittent
referring to “INTERMIT-
TENT AND POOR CON-
NECTION” in Section 0A.“GRN/YEL” circuit open or
shorted to ground.
If wire and connections
are OK, replace TCC
solenoid.

AUTOMATIC TRANSMISSION (4 A/T) 7B1-37
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool.
3) Start engine and shift transfer lever to “2H” or “4H” range.
4) Shift selector lever in D range and keep it for 10 seconds.
5) Drive vehicle about 30 km/h (20 mile/h) with 2nd gear in “D” range for 10 seconds.
6) Increase vehicle speed to about 80 km/h (50 mile/h) with 4th gear in D range and keep it for 10 seconds.
7) Release accelerator pedal, decrease vehicle speed and stop vehicle.
8) Check DTC and/or pending DTC.
TROUBLESHOOTING
WARNING:
When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent 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.
Step Action Yes No
1Was “A/T DIAGNOSTIC FLOW TABLE” in this
section performed?Go to Step 2. Go to “A/T DIAGNOSTIC
FLOW TABLE” in this sec-
tion.
2 Check shift solenoid circuit for short.
1) Turn ignition switch OFF and disconnect
PCM connectors.
2) Check for proper connection to PCM at ter-
minals C51-1-2 or C51-1-1.
3) If OK, then turn ignition switch ON and mea-
sure voltage between terminal C51-1-2 or
C51-1-1 of disconnected PCM connector
and ground.
Is it about 0 V?Go to Step 3.“GRN” or “GRN/RED“ cir-
cuit shorted to power cir-
cuit.
3 Check shift solenoid circuit for open or short.
1) Turn ignition switch OFF.
2) Measure resistance between terminal C51-
1-2 or C51-1-1 of disconnected PCM con-
nector and ground.
Is it 11 – 15 Ω (at 20 °C (68 °F))?Intermittent trouble or
faulty PCM.
Check for intermittent
referring to “INTERMIT-
TENT AND POOR CON-
NECTION” in Section 0A.“GRN” or “GRN/RED“ cir-
cuit open or shorted to
ground.
If wire and connections
are OK, replace malfunc-
tion shift solenoid.

AUTOMATIC TRANSMISSION (4 A/T) 7B1-61
Special Tool
09925-37811-001 09931-76030 09931-76011
Oil pressure gauge 16/14 pin DLC cable for
Tech 1AMass storage cartridge for
Tech 1ATech 1A kit (SUZUKI scan
tool) (See NOTE “A”.)
09940-53111
Bearing installer Tech 2 kit (SUZUKI scan
tool) (See NOTE “B”.)
NOTE:
“A”: This kit includes the following items and substitutes for the Tech 2 kit.
1. Storage case, 2. Operator’s manual, 3. Suzuki scan tool, 4. DLC cable, 5. Test lead/probe,
6. Power source cable, 7. DLC cable adapter, 8. Self-test adapter
“B”: This kit includes the following items and substitutes for the Tech 1A kit.
1. Tech 2, 2. PCMCIA card, 3. DLC cable, 4. SAE 16/19 adapter, 5. Cigarette cable, 6. DLC loopback
adapter, 7. Battery power cable, 8. RS232 cable, 9. RS232 adapter, 10. RS232 loopback connector,
11. Storage case, 12. Power supply

7E-4 DIFFERENTIAL (FRONT)
Flow table
Step Action Yes No
1 Turn ON ignition switch (but engine at stop) and
check malfunction indicator lamp.
Does lamp light up?Go to step 2. A trouble has occurred
at some place. Repair
it referring to
MALFUNCTION INDI-
CATOR LAMP
(“CHECK ENGINE”
LAMP) CHECK in
DIAGNOSIS of Sec-
tion 6.
2 Check 4WD switch circuit.
Turn ignition switch ON and check that voltage
between terminal C51-3-7 and terminal C51-3-17
(ground) is as follows.
 When transfer shift lever is in N or 2H : 10 – 14 V
 When transfer shift lever is in 4L or 4H : 0 – 1 V
Is the check result satisfactory?Go to step 3. Check 4WD switch
(refer to Section 7A),
“BLK/ORN” and “BLK”
circuits of 4WD switch.
If OK, substitute a
known-good ECM
(PCM) and recheck.
3 Check power supply.
1) Turn ignition switch ON.
2) Check voltage between C51-1-9 and C51-3-17
(ground). The check results should be as follows.
 When transfer shift lever is in N or 2H : 0 – 1 V
 When transfer shift lever is in 4L or 4H : 10 – 14 V
Is the check result satisfactory?Go to step 4. Check “RED” circuit. If
it is OK, substitute a
known-good ECM
(PCM) and recheck.
4 Check air pump assembly circuit.
1) Check for proper connection to air pump assem-
bly at all terminals.
2) Turn ignition switch ON.
3) Check voltage between C51-3-18 and C51-3-17
(ground). The check result should be as follows.
 When transfer shift lever is in 2H or N : 0 – 1 V
 When transfer shift lever is in 4L or 4H (more than
4 seconds after shifted to 4L or 4H) : 10 – 14 V
Is the check result satisfactory?Go to step 5. Check air pump
assembly referring to
“ON-VEHICLE SER-
VICE”, and then
“PNK” circuit.
If OK, substitute a
known-good ECM
(PCM) and recheck.
5 Check 4WD indicator lamp circuit.
1) Turn ignition switch ON.
2) Check voltage between E61-19 and C51-3-17
(ground). The check result should be as follows.
 When transfer shift lever is in 2H or N : 10 – 14 V
 When transfer shift lever is in 4L or 4H : 0 – 1 V
Is the check result satisfactory?4WD control system is
in good condition.Check “ORN/BLK” cir-
cuit (including indica-
tor lamp and
combination meter).
If OK, substitute a
known-good ECM
(PCM) and recheck.

7F-2 DIFFERENTIAL (REAR)
General Description
The differential assembly using a hypoid bevel pinion and gear is installed to the rear axle. It is set in the conven-
tional type axle housing.
The differential assembly is decisive in that the drive power is concentrated there. Therefore, use of genuine
parts and specified torque is compulsory. Further, because of sliding tooth meshing with high pressure between
bevel pinion and gear, it is mandatory to lubricate them by hypoid gear oil.
Diagnosis
Diagnosis Table
Condition Possible Cause Correction
Gear noiseDeteriorated or water mixed lubricant Repair and replenish.
Inadequate or insufficient lubricant Repair and replenish.
Maladjusted backlash between drive bevel pin-
ion and gearAdjust as prescribed.
Improper tooth contact in the mesh between
drive bevel pinion and gearAdjust or replace.
Loose drive bevel gear securing bolts Replace or retighten.
Damaged differential gear(s) or differential pin-
ion(s)Replace.
Bearing noise(Constant noise) Deteriorated or water mixed
lubricantRepair and replenish.
(Constant noise) Inadequate or insufficient
lubricantRepair and replenish.
(Noise while coasting) Damaged bearing(s) of
drive bevel pinionReplace.
(Noise while turning) Damaged differential side
bearing(s) or axle bearing(s)Replace.
Oil leakageClogged breather plug Clean.
Worn or damaged oil seal Replace.
Excessive oil Adjust oil level.

DIFFERENTIAL (REAR) 7F-7
b) Remove differential left case (2) from differential right case
(1).
c) Remove pinion shafts, differential gears, washers, differen-
tial pinions, spring washers, thrust washers.
4) Using special tools, pull out differential side bearings (1).
Special tool
(C) : 09913-85230
(D) : 09913-61510
5) Remove drive bevel pinion (hypoid gear) assembly.
a) Hold universal joint flange with special tool and then
remove flange nut by using power wrench (4 - 10 magnifica-
tion) (2).
Special tool
(E) : 09922-66021
2
1
1. Socket wrench

DIFFERENTIAL (REAR) 7F-17
9) While tightening flange nut gradually with special tool and
power wrench (4 - 10 magnification) (1), set preload of pinion
to specification.
Pinion bearing preload
: 0.9 – 1.7 N·m (9.0 – 17.0 kg-cm, 7.8 – 14.7 lb-in.)
Spring measure reading with special tool
: 16 – 30 N (1.6 – 3.0 kg, 3.5 – 6.6 lb)
Special tool
(C) : 09922-76560
(J) : 09922-66021 NOTE:
Before taking measurement with spring balance (3) or
torque wrench (4), check for smooth rotation by hand.
On measuring preload, rotate the drive bevel pinion
about 1 rotation per 2 seconds.
Be sure to tighten gradually and carefully till specified
starting torque is obtained. Turning back overtightened
flange nuts should be avoided.
2. Socket wrench