ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT BRAKE MASTER CYLINDER FLUID PRESSURE CHANGE
(a) Inspect the battery positive voltage.
Battery positive voltage:
10 to 14 V
(b) Turn the ignition switch to OFF, and depress the brake pedal more than 20 times.
HINT:
When pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.
(c) Install a LSPV gauge (SST) and brake pedal effort gauge, and bleed the air. SST: 09709-29018 |
|
(d) When the booster does not operate:
(1) Depress the brake pedal and check the fluid pressure.
At 245 N (25 kgf, 55 lbf):
Front brake pressure |
Rear brake pressure |
---|---|
1,840 kPa (18.8 kgf/cm2, 267 psi) or more |
0 kPa (0 kgf/cm2, 0 psi) |
At 343 N (35 kgf, 77 lbf):
Front brake pressure |
Rear brake pressure |
---|---|
2,710 kPa (27.6 kgf/cm2, 393 psi) or more |
0 kPa (0 kgf/cm2, 0 psi) |
(e) When the booster operates:
(1) Turn the ignition switch to ON, and wait until the pump motor has stopped (step A).
HINT:
Pump operating sound can be heard.
(2) Turn the ignition switch to OFF, and depress the brake pedal more than 20 times (step B).
HINT:
When pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.
(3) Repeat step A and B 5 times (step C).
(4) Turn the ignition switch to ON, and check that the pump stops after approximately 8 to 14 seconds.
NOTICE:
If the pump does not stop, repeat step C again.
(5) Depress the brake pedal and check the fluid pressure.
At 49 N (5 kgf, 11 lbf):
Front brake pressure |
Rear brake pressure |
---|---|
770 to 1,280 kPa (7.9 to 13.1 kgf/cm2, 112 to 186 psi) |
800 to 1,330 kPa (8.2 to 13.6 kgf/cm2, 116 to 193 psi) |
At 98 N (10 kgf, 22 lbf):
Front brake pressure |
Rear brake pressure |
---|---|
2,650 to 3,590 kPa (27.0 to 36.6 kgf/cm2, 384 to 521 psi) |
2,680 to 3,630 kPa (27.3 to 37.0 kgf/cm2, 389 to 526 psi) |
At 147 N (15 kgf, 33 lbf):
Front brake pressure |
Rear brake pressure |
---|---|
4,680 to 5,720 kPa (47.7 to 58.3 kgf/cm2, 679 to 830 psi) |
4,710 to 5,760 kPa (48.0 to 58.7 kgf/cm2, 683 to 835 psi) |
At 196 N (20 kgf, 44 lbf):
Front brake pressure |
Rear brake pressure |
---|---|
6,610 to 7,680 kPa (67.4 to 78.3 kgf/cm2, 959 to 1,114 psi) |
6,640 to 7,720 kPa (67.7 to 78.7 kgf/cm2, 963 to 1,120 psi) |
2. INSPECT BRAKE MASTER CYLINDER OPERATION
(a) Inspect the battery positive voltage.
Battery positive voltage:
10 to 14 V
(b) Turn the ignition switch to OFF, and depress the brake pedal more than 20 times.
HINT:
When pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.
(c) Check that the brake pedal becomes easy to depress.
If the pedal does not become easy to depress, check and replace the brake line and hydraulic brake booster.
(d) Turn the ignition switch to ON and check the pump motor operation noise.
If the pump motor does not operate, check and replace the wire harness and pump motor (see page ).
(e) Connect the Techstream.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Select "Active Test" mode on the Techstream.
HINT:
(f) Check the master cylinder solenoid operation.
Inspection Order (Step) |
SOL Selected By Active Test |
SOL To Be Activated |
---|---|---|
D |
TRAC Solenoid (SRCF) |
SMCF |
E |
TRAC Solenoid (SRCF & SRCR) |
SREA and SMCF |
F |
ABS Solenoid (SFRH) |
SFRH |
G |
ABS Solenoid (SFLH) |
SFLH |
H |
ABS Solenoid (SFRR & SFRH) |
SFRR and SFRH |
I |
ABS Solenoid (SFLR & SFLH) |
SFLR and SFLH |
J |
TRAC Solenoid (SRMF) |
SREC |
K |
TRAC Solenoid (SRMF & SRMR) |
STR and SREC |
L |
ABS Solenoid (SRRH) |
SRRH |
M |
ABS Solenoid (SRLH) |
SRLH |
N |
ABS Solenoid (SRRR & SRRH) |
SRRR and SRRH |
O |
ABS Solenoid (SRLR & SRLH) |
SRLR and SRLH |
(g) Inspect front VSC solenoid (SMCF) operation (step D).
HINT:
(1) Select "TRAC Solenoid (SRCF)" on the Techstream.
(2) Turn the "TRAC Solenoid (SRCF)" on by the Techstream, then depress the brake pedal with stable force and check that the pedal cannot be depressed.
If the pedal can be depressed, replace the hydraulic brake booster.
HINT:
To protect the solenoid, Techstream turns off automatically 2 seconds after every solenoid has been turned on.
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(3) Release the brake pedal.
(4) When the solenoid is off, depress the brake pedal again and check that the brake pedal can be depressed.
If the pedal can be depressed, replace the hydraulic brake booster.
(h) Prepare the vehicle.
(1) Jack up and support the vehicle.
(2) Release the parking brake pedal (lever).
(3) Shift the shift lever to the "N" position and check the rear wheels by rotating them by hand.
(i) Inspect front VSC solenoid (SREA) operation (step E).
HINT:
(1) Select "TRAC Solenoid (SRCF & SRCR)" on the Techstream.
(2) Turn the "TRAC Solenoid (SRCF & SRCR)" on simultaneously by the Techstream, then depress the brake pedal with stable force.
(3) When the solenoids are on, check that the front wheels do not rotate by hand.
If the front wheels rotate, replace the brake master cylinder.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoids are off, turn the "TRAC Solenoid (SRCF)" on again, then depress the brake pedal and check the front wheels by rotating them by hand.
If front wheels stop, replace the hydraulic brake booster.
(5) When the "TRAC Solenoid (SRCF)" is off, depress the brake pedal again and check that the brake pedal can be depressed.
If the pedal can be depressed, replace the hydraulic brake booster.
(j) Inspect front ABS solenoid (SFRH) operation (step F).
HINT:
(1) Select "ABS Solenoid (SFRH)" on the Techstream.
(2) Turn the "ABS Solenoid (SFRH)" on by the Techstream, then depress the brake pedal with stable force.
(3) When the solenoid is on, check the right front wheel by rotating it by hand.
If the right front wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoid is off, depress the brake pedal again and check that the right front wheel does not rotate by hand.
If the right front wheel rotates, replace the hydraulic brake booster.
(k) Inspect front ABS solenoid (SFLH) operation (step G).
HINT:
(1) Select "ABS Solenoid (SFLH)" on the Techstream.
(2) Turn the "ABS Solenoid (SFLH)" on by the Techstream, then depress the brake pedal with stable force.
(3) When the solenoid is on, check the left front wheel by rotating it by hand.
If the left front wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoid is off, depress the brake pedal again and check that the left front wheel does not rotate by hand.
If the left front wheel rotates, replace the hydraulic brake booster.
(l) Inspect front ABS solenoid (SFRR) operation (step H).
HINT:
(1) Select "ABS Solenoid (SFRR & SFRH)" on the Techstream.
(2) Depress the brake pedal with stable force, then turn the "ABS Solenoid (SFRR & SFRH)" on simultaneously by the Techstream.
(3) When the solenoids are on, check the right front wheel by rotating it by hand.
If the right front wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoids are off, depress the brake pedal again and check that the right front wheel does not rotate by hand.
If the right front wheel rotates, replace the hydraulic brake booster.
(m) Inspect front ABS solenoid (SFLR) operation (step I).
HINT:
(1) Select "ABS Solenoid (SFLR & SFLH)" on the Techstream.
(2) Depress the brake pedal with stable force, then turn the "ABS Solenoid (SFLR & SFLH)" on simultaneously by the Techstream.
(3) When the solenoids are on, check the left front wheel by rotating it by hand.
If the left front wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoids are off, depress the brake pedal again and check that the left front wheel does not rotate by hand.
If the left front wheel rotates, replace the hydraulic brake booster.
(n) Inspect rear VSC solenoid (SREC) operation (step J).
HINT:
(1) Select "TRAC Solenoid (SRMF)" on the Techstream.
(2) Depress the brake pedal with stable force, then turn the "TRAC Solenoid (SRMF)" on by the Techstream.
(3) Release the brake pedal when the solenoid is on, and check that the rear wheels do not rotate by hand.
If the rear wheels rotate, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoid is off, check the rear wheels by rotating them by hand.
If the rear wheels stop, replace the hydraulic brake booster.
(o) Inspect rear VSC solenoid (STR) operation (step K).
HINT:
(1) Select "TRAC Solenoid (SRMR)" on the Techstream.
(2) Turn the "TRAC Solenoid (SRMR)" on simultaneously by the Techstream.
(3) When the solenoids are on , check that the rear wheels do not rotate by hand.
If the rear wheels rotate, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoids are off, check the rear wheels by rotating them by hand.
If the rear wheels stop, replace the hydraulic brake booster.
(5) When the "TRAC Solenoid (SRMF)" is off, depress the brake pedal again and check that the rear wheels do not rotate by hand.
If the rear wheels rotate, replace the hydraulic brake booster.
(p) Inspect rear ABS solenoid (SRRH) operation (step L).
HINT:
(1) Select "ABS Solenoid (SRRH)" on the Techstream.
(2) Turn the "ABS Solenoid (SRRH)" on by the Techstream, then depress the brake pedal with stable force.
(3) When the solenoid is on, check the right rear wheel by rotating it by hand.
If the right rear wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoid is off, depress the brake pedal again and check that the right rear wheel does not rotate by hand.
If the right rear wheel rotates, replace the hydraulic brake booster.
(q) Inspect rear ABS solenoid (SRLH) operation (step M).
HINT:
(1) Select "ABS Solenoid (SRLH)" on the Techstream.
(2) Turn the "ABS Solenoid (SRLH)" on by the Techstream, then depress the brake pedal with stable force.
(3) When the solenoid is on, check the left rear wheel by rotating it by hand.
If the left rear wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoid is off, depress the brake pedal again and check that the left rear wheel does not rotate by hand.
If the left rear wheel rotates, replace the hydraulic brake booster.
(r) Inspect rear ABS solenoid (SRRR) operation (step N).
HINT:
(1) Select "ABS Solenoid (SRRR & SRRH)" on the Techstream.
(2) Depress the brake pedal with stable force, then turn the "ABS Solenoid (SRRR & SRRH)" on simultaneously by the Techstream.
(3) When the solenoids are on, check the right rear wheel by rotating it by hand.
If the right rear wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoids are off, depress the brake pedal again and check that the right rear wheel does not rotate by hand.
If the right rear wheel rotates, replace the hydraulic brake booster.
(s) Inspect rear ABS solenoid (SRLR) operation (step O).
HINT:
(1) Select "ABS Solenoid (SRLR & SRLH)" on the Techstream.
(2) Depress the brake pedal with stable force, then turn the "ABS Solenoid (SRLR & SRLH)" on simultaneously by the Techstream.
(3) When the solenoids are on, check the left rear wheel by rotating it by hand.
If the left rear wheel stops, replace the hydraulic brake booster.
HINT:
NOTICE:
When operating it continuously, set the interval of more than 20 seconds.
(4) When the solenoids are off, depress the brake pedal again and check that the left rear wheel does not rotate by hand.
If the left rear wheel rotates, replace the hydraulic brake booster.
(t) Lower the vehicle.
(u) Disconnect the Techstream.
High Power Supply Voltage Malfunction (C1417)
DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU
(brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS
operation.
This DTC is stored when the +BS terminal voltage deviates from the DTC detection
condition due to a malfunc ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the navigation system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
2 ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Perform "Inspection After Repairs" after replacing the cylinder head sub-assembly
or cylinder head LH (See page ).
PROCEDURE
1. INSTALL SPARK PLUG TUBE
NOTICE:
When using a new cylinder head, the spark plug tubes must be replaced.
...