ignition system SUZUKI GRAND VITARA 2001 2.G Owners Manual

CRUISE CONTROL SYSTEM 8E-1
6F1
6F2
6G
6H
6K
7A
7A1
7B1
7C1
7D
7E
8E
8A
8B
8C
8D
8B
9
10
10A
10B
SECTION 8E
CRUISE CONTROL SYSTEM
CONTENTS
General Description ....................................... 8E-2
Cautions in Servicing ................................... 8E-2
Symbols and Marks ...................................... 8E-2
Abbreviations ............................................... 8E-2
Wiring Color Symbols ................................... 8E-2
Joint Connector ............................................ 8E-2
Fuse Box and Relay ..................................... 8E-2
Power Supply Diagram ................................ 8E-2
Cruise Control System ................................. 8E-3
Cruise control system circuit .................... 8E-3
Components and functions....................... 8E-4
Cancel Conditions .................................... 8E-5
Diagnosis ........................................................ 8E-5
Diagnosis Table ........................................... 8E-5
Note on System Circuit Inspection ............... 8E-7
Cruise Main Switch Indicator Lamp
Circuit Check ................................................ 8E-8
“Cruise” Indicator Lamp Circuit Check ......... 8E-9
Cruise Main Switch, Coast/Set,
Resume/Accel and Cancel Switches
Circuits Check ............................................ 8E-10
VSS Circuit Check ...................................... 8E-11
Stop Lamp Switch (with Pedal Position
Switch) Circuits Check ............................... 8E-12Transmission Range Switch Circuit Check 8E-13
Clutch Pedal Position Switch Circuit Check 8E-14
Throttle Valve Opening Signal Circuit
Check ......................................................... 8E-15
Overdrive and TCC off Command Signal
Circuit Check.............................................. 8E-16
Cruise Control Module Power and Ground
Circuits Check ............................................ 8E-16
Cruise Control Module and Its Circuit
Inspection................................................... 8E-17
Cruise Cable Play Inspection and
Adjustment ................................................. 8E-19
On-Vehicle Service ...................................... 8E-19
Cruise Main Switch .................................... 8E-19
Coast/Set, Resume/Accel and Cancel
Switches..................................................... 8E-20
Vehicle Speed Sensor (VSS) ..................... 8E-20
Transmission Range Switch ...................... 8E-20
Clutch Pedal Position (CPP) Switch .......... 8E-21
Stop Lamp Switch (with Pedal Position
Switch) ....................................................... 8E-22
Cruise Control Actuator Assembly
(with Control Module) ................................. 8E-23
Cruise Cable .............................................. 8E-24

WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).

CRUISE CONTROL SYSTEM 8E-5
Cancel Conditions
Constant cruising is cancelled under the following conditions.
•Ignition switch is turned OFF.
•Cruise main switch is turned OFF.
•Vehicle speed has slowed down to lower than minimum operating speed (40 km/h (25 mile/h)).
•*Vehicle speed varies beyond cancel speed range (–15 km/h, –9 mile/h) from preset speed.
•*Brake pedal is depressed. (Stop lamp switch is turned ON).
•*Clutch pedal is depressed (Clutch pedal position switch is turned ON) (For M/T vehicle).
•*Selector lever is shifted to N range (Park/Neutral position switch in transmission range switch is turned ON).
•*CANCEL switch is turned ON.
Diagnosis
Diagnosis Table
PCM – Overdrive and TCC
off command signal outputWhen the throttle opening for the vehicle speed exceeds the specified value
during cruise control, the cruise control module sends this signal to PCM. PCM
uses this signal as one of signals to control 4-A/T.
Cruise main switch indicator
lampIn the state with the ignition switch ON and the cruise control system OFF,
pressing this switch once and releasing it will activate the cruise control system
and the cruise control module will cause the indicator lamp to light up.
“CRUISE” indicator lamp It lights up when cruise control (accelerator pedal control) is functioning. Component Function
NOTE:
When constant cruising is cancelled under above any condition with * (asterisk), vehicle speed before
cancellation can be resumed by operating ACCEL RESUME switch, provided that vehicle speed is
higher than 40 km/h (25 miles/h).
Condition Possible Cause Correction
Main switch indicator
lamp fails to light up
or remains ON.Main switch indicator lamp circuit faulty Refer to “CRUISE MAIN SWITCH INDI-
CATOR LAMP CIRCUIT CHECK” in this
section.
Cruise control module power and ground
circuits faultyRefer to “CRUISE CONTROL MODULE
POWER AND GROUND CIRCUIT
CHECK” in this section.
Actuator assembly faulty Replace actuator assembly.
“CRUISE” indicator
lamp fails to light up
or remains ON.“CRUISE” indicator lamp circuit Refer to ““CRUISE” INDICATOR LAMP
CIRCUIT CHECK” in this section.
Cruise control module power and ground
circuitsRefer to “CRUISE CONTROL MODULE
POWER AND GROUND CIRCUIT
CHECK” in this section.
Actuator assembly faulty Replace actuator assembly.

8E-8 CRUISE CONTROL SYSTEM
Cruise Main Switch Indicator Lamp Circuit Check
Fig. for Step 2Step Action Yes No
1 Check Circuit for Short.
3) Disconnect connector from cruise control module with
ignition switch OFF.
4) Turn ignition switch ON.
Does cruise main switch indicator lamp turn ON?“LT GRN/WHT” cir-
cuit is shorted to
ground.Go to Step 2.
2 Check Circuit for Open
1) Check for proper connection to cruise control module at
terminal E132-10.
2) If OK, connect terminal E132-10 to ground.
Does indicator lamp turn ON at ignition switch ON?Lamp circuit is OK. Go to Step 3.
3 Lamp Bulb Check
1) Remove cruise main switch from instrument panel.
2) Remove lamp bulb and check it.
Is bulb in good condition?“BLK/WHT” or “LT
GRN/WHT” circuit
is open.Replace bulb.

CRUISE CONTROL SYSTEM 8E-9
“Cruise” Indicator Lamp Circuit Check
Fig. for Step 2Step Action Yes No
1 Check Circuit for Short.
1) Disconnect connector from cruise control module with
ignition switch OFF.
2) Turn ignition switch ON.
Does “CRUISE” indicator lamp turn ON?“GRN/YEL” circuit
is shorted to
ground.Go to Step 2.
2 Check Circuit for Open
1) Check for proper connection to cruise control module at
terminal E132-4.
2) If OK, connect terminal E132-4 to ground.
Does indicator lamp turn ON at ignition switch ON?Lamp circuit is OK. Go to Step 3.
3 Lamp Bulb Check
1) Remove combination meter from instrument panel.
2) Remove lamp bulb and check it.
Is bulb in good condition?“BLK/WHT” or
“GRN/YEL” circuit
is open.Replace bulb.

8E-10 CRUISE CONTROL SYSTEM
Cruise Main Switch, Coast/Set, Resume/Accel and Cancel Switches Circuits
Check
Fig. for Step 1Step Action Yes No
1 Switch Circuit Check
1) Disconnect connector from cruise control module with
ignition switch OFF.
2) Check for proper connection to cruise control module at
terminal E132-8.
3) If OK, check resistance between terminal E132-8 and
E132-5 under each condition below.
Switch circuit specification (resistance)
All switches OFF : Infinity
COAST/SET switch rotated (ON) : 200 – 240 Ω
ΩΩ Ω
RESUME/ACCEL switch rotated (ON) : 820 – 1000 Ω
ΩΩ Ω
CANCEL switch pressed (ON) : About 0 Ω
ΩΩ Ω
4) Turn ignition switch ON and check voltage between termi-
nal E132-8 and ground under each condition below.
Switch circuit specification (voltage)
Cruise main switch released (OFF) : 0 V
Cruise main switch pressed (ON) : 10 – 14 V
Are check results in above steps 3) and 4) satisfactory?Switch circuit is
OK.Go to Step 2.
2 Cruise Main Switch Check
1) Check cruise main switch for operation referring to “Cruise
Main Switch Inspection” in this section.
Is switch in good condition?Go to step 3. Replace.
3 COAST/SET, RESUME/ACCEL and CANCEL Switches Check
1) Check COAST/SET, RESUME/ACCEL and CANCEL
switches for operation referring to “COAST/SET,
RESUME/ACCEL and CANCEL SWITCHES” in this sec-
tion.
Are all switches in good condition?“BLK/YEL” or “LT
GRN” circuit is
open or short.Replace.
1. Cruise main switch
2.“RESUME ACCEL” switch
3.“COAST SET” switch
4.“CANCEL” switch

CRUISE CONTROL SYSTEM 8E-11
VSS Circuit Check
Fig. for Step 1Step Action Yes No
1 Vehicle Speed Sensor Circuit Check
1) Disconnect connector from cruise control module with
ignition switch OFF.
2) Check for proper connection to cruise control module at
terminal E132-1.
3) If OK, check for continuity between terminals E132-1 and
E59-2, terminals C52-2 and C20-1 referring to “CRUISE
CONTROL SYSTEM” in Section 8A.
Is check result satisfactory?VSS circuit is OK.“BLU/YEL” cir-
cuit is open.

8E-12 CRUISE CONTROL SYSTEM
Stop Lamp Switch (with Pedal Position Switch) Circuits Check
Fig. for Step 1Step Action Yes No
1 Stop Lamp Switch (With Pedal Position Switch) Circuits Check
1) Disconnect connector from cruise control module with
ignition switch OFF.
2) Check for proper connection to cruise control module at
terminals E132-2 and E132-6.
3) If OK, turn ignition switch ON.
4) Check Voltage between each terminal and ground under
each condition below.
Stop lamp switch circuit specification
Brake pedal released terminal E132-2 : 0 V
Brake pedal released terminal E132-6 : 10 – 14 V
Brake pedal depressed terminal E132-2 : 10 – 14 V
Brake pedal depressed terminal E132-6 : 0 V
Is check result satisfactory?Stop lamp switch
(with pedal position
switch) circuits are
OK.Go to Step 2.
2 Stop Lamp Switch Position Check
1) Check stop lamp switch for installation position referring to
“STOP LAMP SWITCH” in Section 5.
Is check result satisfactory?Go to Step 3. Adjust.
3 Stop Lamp Switch (With Pedal Position Switch) Check
1) Disconnect connector from stop lamp switch.
2) Check for proper connection to stop lamp switch at all ter-
minals.
3) If OK, check stop lamp and pedal position switches for
operation referring to “STOP LAMP SWITCH” in this sec-
tion.
Is this switch in good condition?“YEL/GRN” or
“GRN/WHT” circuit
is open or short.Replace.

CRUISE CONTROL SYSTEM 8E-13
Transmission Range Switch Circuit Check
Fig. for Step 1Step Action Yes No
1 Transmission Range Switch Circuit Check
1) Disconnect connector from cruise control module with
ignition switch OFF.
2) Check for proper connection to cruise control module at
terminal E132-9.
3) If OK, connect ohmmeter between terminal E132-9 and
ground.
4) Check for continuity under each condition below.
Transmission range switch circuit specification
Selector lever at “P” or “N” range : Continuity
“R”, “D”, “2” or “L” range : Infinity
Is check result satisfactory?Transmission range
switch circuit is OK.Go to Step 2.
2 Transmission Range Switch Check
1) Disconnect transmission range switch connector.
2) Check for proper connection to transmission range switch
at disconnected connector terminals.
3) If OK, check transmission range switch for operation refer-
ring to “TRANSMISSION RANGE SWITCH” in Section
7B1.
Is check result satisfactory?“BLK/RED” or
“BLK/YEL” circuit is
open or short.Adjust or
replace.

8E-14 CRUISE CONTROL SYSTEM
Clutch Pedal Position Switch Circuit Check
Fig. for Step 1Step Action Yes No
1 Clutch Pedal Position Switch Circuit Check
1) Disconnect connector from cruise control module with
ignition switch OFF.
2) Check for proper connection to cruise control module at
terminal E132-9.
3) If OK, check for resistance between terminal E132-9 and
ground under each condition below.
Clutch pedal position switch circuit specification
Clutch pedal released : Infinity
Clutch pedal depressed : Continuity
Is check result satisfactory?Clutch pedal posi-
tion switch circuit is
OK.Go to Step 2.
2 Clutch Pedal Position Switch Position Check
1) Check clutch pedal position switch for installation position
referring to “CLUTCH PEDAL POSITION SWITCH” in this
section.
Is check result satisfactory?Go to Step 3. Adjust.
3 Clutch Pedal Position Switch Check
1) Disconnect connector from clutch pedal position switch.
2) Check for proper connection to clutch pedal position
switch at all terminals.
3) If OK, check clutch pedal position switch for operation
referring to “CLUTCH PEDAL POSITION SWITCH” in this
section.
Is this switch in good condition?“BLU” or “BLK” cir-
cuit is open or
short.Replace.

CRUISE CONTROL SYSTEM 8E-15
Throttle Valve Opening Signal Circuit Check
Fig. for Step 2Step Action Yes No
1 Powertrain Control Module (PCM) Diagnostic Trouble Code
Check
1) Check PCM for DTC.
Is there a DTC related to throttle position sensor?Check and repair
TP sensor refer-
ring to Section 6-1.Go to Step 2.
2 Throttle Valve Opening Signal Circuit Check
1) Turn ignition switch ON.
2) Check voltage between terminal E61-4 of PCM connector
connected and ground.
Does voltage vary linearly according to throttle opening?Throttle valve
opening signal cir-
cuit is OK.Go to Step 3.
3 Supply Voltage Check
1) Disconnect connector from PCM with ignition switch OFF.
2) Check for proper connection to PCM at terminal E61-4.
3) If OK, connect “BLU” wire terminal of main relay to ground
with service wire.
4) Turn ignition switch ON.
5) Check voltage between E61-4 of PCM connector and
ground.
Is it 10 – 14 V?Check TP sensor
and circuits refer-
ring to Section 6-1.
If OK, substitute a
known-good PCM
and recheck.Check “GRY”
wire for open
and short. If OK,
proceed to
cruise control
module power
and ground cir-
cuits check.