Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 371

6C-27 Power Assisted Steering System:

Rotor and Vane
• Check sliding surfaces of rotor and vane for wear and

damage.

• Check clearance between rotor and vane. Replace

pump assembly if any defect is found.

Clearance between rotor and vane
Standard: 0.015 mm (0.0006 in.)
Limit: 0.027 mm (0.0011 in.)

Relief Valve (Flow Control Valve) and Its Spring
• Check fluid passage of relief valve and orifice of

connector for obstruction (clogged).

• Check sliding surface of relief valve for wear and

damage.

• Check free length of relief valve spring (1). Replace if

any defective is found.

Free length of relief valve spring
Standard: 22.0 mm (0.866 in.)
Limit: 19.0 mm (0.748 in.)

P/S Pump Inspection (J20A Engine Model)

S6JB0A6306025

Check P/S pump as follows.
• Damage of pump body.
• Oil leakage from pump body.
• Wear and damage of pulley.
• Abnormal noise when pulley is turned by hand.
If abnormality is found, replace P/S pump with new one.

P/S Pump Inspection (F9Q Engine Model)

S6JB0A6306030

Check P/S pump as follows.
• Damage of pump body.
• Oil leakage from pump body.
• Wear and damage of pulley.
• Abnormal noise when pulley is turned by hand.
If abnormality is found, replace P/S pump with new one.

1. Thickness gauge

IYSQ01630056-01

IYSQ01630057-01

IYSQ01630058-01

IYSQ01630059-01

Power Assisted Steering System: 6C-28

Specifications

Tightening Torque Specifications

S6JB0A6307001

NOTE
The specified tightening torque is also described in the following.
“P/S Gear Case Assembly Components”
“P/S Hose / Pipe Components”
“P/S Pump Components (M16A Engine Model)”
“P/S Pump Assembly Components (J20A Engine Model)”
“P/S Pump Assembly Components (F9Q Engine Model)”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fastener Information in Section 0A”.

Fastening part

Tightening torque

Note

N

⋅m

kgf-m

lb-ft

P/S belt tension pulley bolt

25

2.5

18.5

)

P/S belt tension pulley nut

25

2.5

18.5

)

Tie-rod end nut

43

4.3

31.0

)

Wheel nut

100

10.0

72.5

)

Tie-rod end lock nut

65

6.5

47.0

)

Steering lower shaft bolt

25

2.5

18.5

)

Gear case high pressure pipe union bolt

35

3.5

25.5

)

Gear case cylinder pipe flare nut

25

2.5

18.0

)

Gear case mounting bolt

105

10.5

76

)

Gear case low pressure pipe union bolt

40

4.0

29.0

)

Stabilizer bar mount bracket mount bolt

60

6.0

43.0

)

Gear case low pressure pipe flare nut

35

3.5

25.5

(F9Q engine model) )

P/S pump bracket bolt

55

5.5

40.0

(F9Q engine model) )

Tie-rod ball nut

90

9.0

65.0

)

P/S pump mounting bolt

25

2.5

18.0

)

/ ) / )

High pressure pipe union bolt

60

6.0

43.5

)

/ )

P/S pump high pressure pipe union bolt

60

6.0

43.0

)

P/S pump cover bolt

28

2.8

20.5

)

Pressure switch (M16A engine model)

28

2.8

20.5

)

Plug

60

6.0 43.5

)

Suction connector bolt (M16A engine model)

12

1.2

9.0

)

6C-29 Power Assisted Steering System:

Special Tools and Equipment

Recommended Service Material

S6JB0A6308001

NOTE
Required service material is also described in the following.
“P/S Gear Case Assembly Components”

Special Tool

S6JB0A6308002

Material

SUZUKI recommended product or Specification

Note

Grease

SUZUKI Super Grease A

P/No.: 99000–25010

)

Thread lock cement

Thread Lock Cement 1305

P/No.: 99000–32100

)

09913–75821

09915–77412

Bearing installer attachment

Oil pressure gauge

)

)

09915–77420

09943–88211

Oil pressure gauge
attachment and hose set

Pinion bearing installer

)

)

09945–55410
Bushing installer
)

/ )

Table of Contents 7- i

7

Section 7

CONTENTS

HVAC

Precautions . . . . . . . . . . . . .7-1

Precautions. . . . . . . . . . . . . . . . 7-1

Precautions for HVAC. . . . . . . . . . ... 7-1

Heater and Ventilation. . . . . . . . 7A-1

General Description . . . . . . . . . . . .7A-1

Heater and Ventilation Construction . . . . ... 7A-1
Body Ventilation Construction. . . . . . . . 7A-2
Additional Heater System Description (Diesel

Engine Model). . . . . . . . . . . . ... 7A-2

On-Board Diagnostic System Description (for

Vehicle without A/C). . . . . . . . . . .. 7A-3

HVAC Control System Description (for

Vehicle without A/C). . . . . . . . . . .. 7A-3

Schematic and Routing Diagram. . . . . . 7A-4

Heater and Ventilation Wiring Circuit Diagram . 7A-4
Electronic Control Input / Output Diagram (for

Vehicle without A/C). . . . . . . . . . .. 7A-4

Additional Heater System Input / Output

Diagram (Diesel Engine Model) . . . . . . 7A-4

Component Location . . . . . . . . . . ...7A-5

Electronic Components Location for Heater

(for Vehicle without A/C) . . . . . . . . ... 7A-5

Additional Heater System Component

Location (Diesel Engine Model) . . . . . . 7A-6

Diagnostic Information and Procedures. . . 7A-6

Heater and Ventilation System Check . . . . 7A-6
Visual Inspection. . . . . . . . . . . . . 7A-8
DTC Check . . . . . . . . . . . . . . . 7A-8
DTC Clearance . . . . . . . . . . . . ... 7A-8
DTC Table. . . . . . . . . . . . . . ... 7A-8
Fail-Safe Table. . . . . . . . . . . . . 7A-8
Scan Tool Data . . . . . . . . . . . . ... 7A-8
Heater and Ventilation Symptom Diagnosis. . 7A-9

Repair Instructions . . . . . . . . . . . 7A-10

Blower Unit and Heater Unit Components . . 7A-10
HVAC Unit Removal and Installation (for

Vehicle without A/C). . . . . . . . . . 7A-10

HVAC Air Filter Removal and Installation (for

Vehicle without A/C). . . . . . . . . . 7A-10

HVAC Air Filter Inspection (for Vehicle without

A/C). . . . . . . . . . . . . . . . . 7A-10

Blower Motor Removal and Installation. . . .7A-10
Blower Motor Inspection . . . . . . . . ...7A-11

Blower Motor Controller Removal and

Installation . . . . . . . . . . . . . ...7A-11

Blower Motor Controller Inspection . . . . ...7A-12
Blower Motor Relay Inspection . . . . . . .7A-12
Heater Core Removal and Installation . . . ..7A-12
Additional Heater Relay Inspection (Diesel

Engine Model) . . . . . . . . . . . . .7A-13

Additional Heater Assembly On-Vehicle

Inspection (Diesel Engine Model) . . . . ...7A-13

Additional Heater Assembly Removal and

Installation (Diesel Engine Model). . . . ...7A-14

HVAC Control Module Removal and

Installation . . . . . . . . . . . . . ...7A-14

HVAC Control Module and Its Circuits

Inspection (for Vehicle without A/C) . . . . 7A-14

Air Flow Control Actuator Removal and

Installation . . . . . . . . . . . . . ...7A-14

Air Flow Control Actuator Inspection. . . . .7A-15
Temperature Control Actuator Removal and

Installation . . . . . . . . . . . . . ...7A-15

Temperature Control Actuator Inspection . . .7A-15
Air Intake Control Actuator Removal and

Installation . . . . . . . . . . . . . ...7A-16

Air Intake Control Actuator Inspection. . . ...7A-16
Actuator Linkage Inspection. . . . . . . ..7A-17
Center Ventilation Louver Removal and

Installation . . . . . . . . . . . . . ...7A-17

Side Ventilation Louver Removal and

Installation . . . . . . . . . . . . . ...7A-17

Rear Duct Components. . . . . . . . . .7A-18
Rear Duct Removal and Installation. . . . ..7A-18

Specifications. . . . . . . . . . . . . .7A-19

Tightening Torque Specifications. . . . . ..7A-19

Air Conditioning System. . . . . . . 7B-1

Precautions. . . . . . . . . . . . . . ...7B-1

A/C System Caution. . . . . . . . . . . 7B-1
Precautions on Servicing A/C System . . . . 7B-1
Precautions in Diagnosing Trouble . . . . . .7B-1
Precautions on Handling Refrigerant HFC-

134a (R-134a) . . . . . . . . . . . . ...7B-1

Precautions on Servicing Refrigerant Line. . ..7B-2
Precautions on Refrigerant Recovery . . . . .7B-3
Precautions on Refrigerant Charge. . . . . .7B-3
Precautions on Replenishing Compressor Oil . 7B-3