BE4032
BE4033I00021
0.25 sec.
0.25 sec. Normal Code
Malfunction codes 11 and 21
4 sec.0.5 sec.
1.5 sec.
1.5 sec. 0.5 sec.
2.5 sec.
ON
OFF
Code 11 Code 21 ON
OFF
N09348
TOYOTA Hand-Held Tester
TOYOTA Break-out-box
N09001DOME Fuse
R/B No.2
I02735
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-663
891 Author: Date:
1997 SUPRA (RM502U)
HINT:
If the DTC is not output, inspect the diagnosis circuit (See
page DI-708).
As an example, the blinking patterns for codes; normal,
11 and 21 are shown in the illustration.
2. ECU TERMINAL VALUES MEASUREMENT BY USING
TOYOTA BRAKE-OUT-BOX AND TOYOTA HAND-
HELD TESTER
(a) Hook up the TOYOTA break- out- box and TOYOTA
hand-held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the tester screen.
(c) Please refer to the TOYOTA hand-held tester has a
ºSnapshotº function. This records the measured data and
is effective in the diagnosis of intermittent problems.
3. DTC CLEARANCE
(a) After completing repairs, the DTC retained in memory can
be cleared by removing the DOME fuse for 10 seconds or
more, with the ignition switch off.
(b) Check that the normal code is displayed after connecting
the fuse.
4. PROBLEM SYMPTOM CONFIRMATION (Road Test)
(a) Inspection 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/COAST.
(4) After releasing the switch, check that the vehicle
cruises at the desired speed.
183
THE PPS (HYDRAULIC REACTION TYPE) CONTROLS THE HYDRAULIC PRESSURE APPLIED TO THE HYDRAULIC
REACTION CHAMBER IN THE GEAR BOX CONTROL UNIT USING THE PPS ECU, TO CHANGE THE STEERING FORCE
AND PROVIDE OPTIMUM STEERING FEELING AT ANY VEHICLE SPEEDS AND UNDER ANY STEERING CONDITIONS.
(PPS OPERATION)
WHEN THE IGNITION SW IS TURNED ON THE STARTING CURRENT FLOWS FROM THE ECU-IG FUSE TO TERMINAL
4 OF THE PPS ECU. THE PPS ECU MONITORS VEHICLE SPEED, INPUT SIGNAL TO TERMINAL 5 OF THE ECU.
WHEN THE VEHICLE SPEED IS LOW, THE PPS ECU SENDS A HIGHER-CURRENT FROM TERMINAL 1 OF THE ECU
TERMINAL 1 OF THE SOLENOID VALVE TERMINAL 2 TERMINAL 2 OF THE ECU TERMINAL 6
GROUND, INCREASING THE SOLENOID VALVE OPENING ANGLE TO PROVIDE COMFORTABLE STEERING
OPERATION. WHEN THE VEHICLE SPEED IS HIGH, THE PPS ECU DECREASES THE SOLENOID VALVE OPENING
ANGLE BY REDUCING THE CURRENT TO THE VALVE TO PROVIDE RESPONSIVE STEERING FEELING.
P1 PPS SOLENOID
1-2 : APPROX. 7.7 W (25C, 77F)
P4 PPS ECU
4-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
6-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C10A28P127 (2JZ-GE)V1025 (2JZ-GTE)
C12B28P429V1027 (2JZ-GE)
P125 (2JZ-GTE)T629
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IF36LEFT KICK PANEL
IH36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I838INSTRUMENT PANEL WIREI1438INSTRUMENT PANEL WIRE
SYSTEM OUTLINE
SERVICE HINTS
