Page 1069 of 3115
I25004
STP
STI-
DI-996
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1189 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check voltage between terminal STP/STI- of ECM connector and body ground.
PREPARATION:
(a) Remove the ECM with connectors still connected.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminal STP/STI- of ECM connec-
tor and body ground when the brake pedal is depressed and re-
leased.
OK:
Depressed10 - 14 V
ReleasedBelow 1 V
OK Proceed to next circuit inspection shown in
problem symptom table (See page DI-991).
NG
4 Check wire harness and connector between terminal STP of ECM and stop light
switch, and terminal STI- of ECM and stop light switch (See page IN-36).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN-36
).
Page 1072 of 3115
DI26S-20
CRUISE CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date of VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Condition of
Problem Occurrence
Date of Problem
Frequency
Occurrence
Problem Occurs?
Vehicle Speed when
Problem Occurred / /
Continuous Intermittent ( Times a day)
km
Mile Brought in
Auto cancel
occurs Driving condition
City driving Freeway Up hill Down hill
After cancel occurred, did the driver activate cruise control
again?
Yes No
Cancel does not
occur With brake ON
Except D position shift
When control SW turns to CANCEL position
Cruise control
malfunction Slip to acceleration side
Slip to deceleration side
Hunting occurs
O/D cut off does not occur
O/D does not return
Switch
malfunction SET ACCEL COAST RESUME CANCEL
Remains ON Does not light up Blinks Symptoms
DTC Check1st Time2nd Time
Normal Code Malfunction Code (Code )
Normal Code Malfunction Code (Code ) Cruise main
indicator light DI-980
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1173 Author: Date:
2004 LAND CRUISER (RM1071U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1073 of 3115
DI26U-32
DI-988
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1181 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.
(See Page)Circuit InspectionTrouble Area
P0500/21
(DI-992)Vehicle Speed Sensor ºAºCombination meter
Open or short in vehicle speed sensor circuit
P0503/23
(DI-992)Vehicle Speed Sensor ºAº Intermittent/Erratic/High
Oen or short in vehicle s eed sensor circuit
Vehicle speed sensor
ECM
P0571/52
(DI-993)Brake Switch ºAº Circuit
Short in stop light switch circuit
Stop light switch
ECM
P0607/54
(DI-997)Control Module PerformanceECM
Page 1079 of 3115
I24838
(1)
(3) DI-984
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1177 Author: Date:
2004 LAND CRUISER (RM1071U)MAIN SW (SUB)
Main switch
(Sub CPU)
ON: Main switch (Sub CPU) is
SET
OFF: Main switch (Sub CPU) is
UNSET
-
CCS READY MSwitch ready
(Main CPU)
ON: Switch ready (Main CPU) is
SET
OFF: Switch ready (Main CPU) is
UNSET
-
CCS READY SSwitch ready
(Sub CPU)
ON: Switch ready (Sub CPU) is
SET
OFF: Switch ready (Sub CPU) is
UNSET
-
CCS INDICATOR MSwitch indicator
(Main CPU)
ON: Switch indicator (Main CPU)
is ON
OFF: Switch indicator (Main CPU)
is OFF
-
CCS INDICATOR SSwitch indicator
(Sub CPU)
ON: Switch indicator (Sub CPU) is
ON
OFF: Switch indicator (Sub CPU)
is OFF
-
CANCEL SWCANCEL switchON: CANCEL switch is SET
OFF: CANCEL switch is UNSET-
SET/COAST SWSET/COAST switch
ON: SET/COAST switch is SET
OFF: SET/COAST switch is UN-
SET
-
RES/ACC SWRES/ACC switchON: RES/ACC switch is SET
OFF: RES/ACC switch is UNSET-
STP LIGHT SW2-MStop light SW signal (Main CPU)ON: Brake pedal depressed
OFF: Brake pedal released-
STP LIGHT SW2-SStop light SW signal (Sub CPU)ON: Brake pedal depressed
OFF: Brake pedal released-
STP LIGHT SW1-MStop light SW signal (Sub CPU)ON: Brake pedal depressed
OFF: Brake pedal released-
SHIFT D POSShift D positionON: Shift is D position
OFF: Shift is except D position-
5. PROBLEM SYMPTOM CONFIRMATION (ROAD TEST)
(a) Inspect the SET switch.
(1) Push the main switch ON.
(2) Drive at a desired speed [40 km/h (25 mph) or high-
er].
(3) Press the control switch to the -/SET.
(4) After releasing the switch, check that the vehicle
cruises at the desired speed.
Page 1080 of 3115
I24838
(1) (3)
I24838
(1)
(3)
I24838
(1)
(3)
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-985
1178 Author: Date:
2004 LAND CRUISER (RM1071U)
(b) Inspect the ACCEL switch.
(1) Push the main switch button to ON.
(2) Drive at a desired speed [40 km/h (25 mph) or high-
er].
(3) Check that the vehicle speed increases while the
control switch is pulled up to +/RES, and that the ve-
hicle cruises at the set speed when the switch is re-
leased.
(4) Momentarily press the control switch upward to the
+/RES and then immediately release it. Check that
the vehicle speed increases by about 1.5 km/h
(Tap-up function).
(c) Inspect the COAST switch.
(1) Push the main switch button to ON.
(2) Drive at a desired speed [40 km/h (25 mph) or high-
er].
(3) Check that the vehicle speed decreases while the
control switch is push down to -/SET, and the ve-
hicle cruises at the set speed when the switch is re-
leased.
(4) Momentarily press the control switch downward to
-/SET , and then immediately release it. Check that
the vehicle speed decreases by about 1.5 km/h
(Tap-down function).
(d) Inspect the CANCEL switch.
(1) Push the main button to ON.
(2) Drive at a desired speed [40 km/h (25 mph) or high-
er].
(3) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.
Depress the brake pedal
Shift to except D position
Push the main switch button to OFF
Page 1081 of 3115
I24838
(1) (3)
I24838
(2), (7) (1), (4)
(1), (4) DI-986
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1179 Author: Date:
2004 LAND CRUISER (RM1071U)
Pull the cruise control switch to CANCEL
(e) Inspect the RESUME switch.
(1) Push the main switch button to ON.
(2) Drive at a desired speed [40 km/h (25 mph) or high-
er].
(3) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.
Depress the brake pedal
Shift to except D position
Press the main switch button to OFF
(4) After the control switch is pulled up to +/RES at the
driving speed of more than 40 km/h (25 mph), check
that the vehicle restores the speed before the can-
cellation.
6. INPUT SIGNAL CHECK
HINT:
For check No.1 - No. 3
Turn the ignition switch to ON.
For check No. 4
Jack up the vehicle.
Start the engine.
Shift to D position
(a) Check the input signal
(1) Keep the main switch to -/SET or +/RES position
and hold it down or hold it up.
(2) Press the switch button to ON.
(3) Check that the CRUISE mainindicator light blinks
twice or 3 times repeatedly after 3 seconds.
(4) Turn the -/SET or +/RES switch to OFF.
(5) Operate each switch as listed in the table below.
(6) Read the blinking pattern of the CRUISE main indi-
cator light.
(7) After performing the check, turn the main switch
button to OFF.
Page 1082 of 3115
No.Operation MethodCRUISE Main Indicator Light
Blinking PatternDiagnosis
1 Turn -/SET switch ON
2Turn +/RES switch ON
3Turn CANCEL switch ON
Depress brake pedal
(Turn stop lamp switch assy ON)
Shift to except D position
(Turn PNP switch OFF)
LightON
OFFSwitch ON
Switch OFF
LightON
OFFSwitch OFF
Switch ON-/SET switch circuit
is normal
+/RES switch circuit
is normal
CANCEL switch circuit
is normal
Stop light switch circuit
is normal
PNP switch circuit is
normal
LightON
OFF LightON
OFF
0.5 sec.0.5 sec.
I24838
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-987
1180 Author: Date:
2004 LAND CRUISER (RM1071U)
HINT:
When 2 or more signals are input to the ECM, the lowest num-
bered code will be displayed first.
7. INPUT SIGNAL CHECK
(Using hand-held tester)
(a) Connect the hand-held tester to DLC3.
(b) Check the control switch (MAIN, CANCEL, SET/COAST,
RES/ACC).
Page 1083 of 3115
DI26X-37
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-991
1184 Author: Date:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
SET not occurring or CANCEL occurring.
(DTC is Normal)
1. Input Signal Circuit
2. Vehicle Speed Sensor Circuit
3. Stop Light Switch Circuit
4. Park/Neutral Position Switch Circuit
5. ECMDI-997
DI-992
DI-993
IN-36
SET not occurring or CANCEL occurring.
(DTC is not output)1. ECMIN-36
Actual vehicle speed deviates above or below the set speed.1. Input Signal Circuit
2. ECMDI-997
IN-36
Gear shifting occurs frequently between 3rd and O/D when driving
on uphill road. (Hurting)1. ECMIN-36
Cruise control not cancelled, even when brake pedal is de-
pressed.1. Stop Light Switch Circuit
2. ECMDI-993
IN-36
Cruise control not cancelled, even when transmission is shifted to
ºNº position.1. Park/Neutral Position Switch Circuit
2. ECM
IN-36
Control switch does not operate.
(+/SET, +/RES, CANCEL not possible)1. Cruise Control Switch Circuit
2. ECMDI-998
IN-36
SET possible at 40 km/h (25 mph) or less, or CANCEL does not
operate at 40 km/h (25 mph) or less.1. Input Signal Circuit
2. ECMDI-997
IN-36
Poor response is ACCEL and RESUME modes.1. ECMIN-36
O/D does not resume, even though the road is not uphill.1. ECMIN-36
DTC memory is erased.1. ECMIN-36
DTC is not output, or is output when should not be.1. Diagnosis Circuit
2. ECM-
IN-36
Cruise MAIN indicator light remains ON or falls to light up.1. Input Signal Circuit
2. ECMDI-997
IN-36
Cruise MAIN indicator light does not light up.1. Cruise MAIN indicator Light CircuitDI-1001
