Toyota Camry

1996-2001 of release

Repair and car operation

ABS systems are delivered by Bosch and Nippondenso firms. Aktyuator systems of Bosch firm has monoblock execution and contains the built-in processor control unit and the relay of solenoidal valves whereas in Nippondenso system these components are mounted separately.

Solenoidal valves operate pressure in a contour of brakes at ABS system operation, the block of valves contains 4 valves, it is the share of a wheel on 1 valve.

SENSORS OF SPEED OF ROTATION OF WHEELS

Sensors of rotor type, are mounted on each of wheels. Signals from sensors arrive on the control unit.

Forward sensors are mounted on a rotary fist, near gear rings of rotors. Rotors are structurally incorporated with forward external CV JOINTS of semi-axes.

Back sensors are mounted on arms of a back axis, rotors are structurally incorporated with a back nave.

ABS SYSTEM CONTROL UNIT

The control unit of Nippondenso system is mounted under a forward partition of a body, the control unit of Bosch system is mounted in an aktyuator. On the block signals from the switch of a signal of braking and sensors of speed of each wheel arrive. These signals are basic data for pressure adjustment in a hydraulic actuator of this wheel. The control unit also possesses function of self-diagnostics and storing of refusals.

At refusal of system the control lamp on the dashboard lights up, and in memory the code of refusal which it is possible to consider and define nature of malfunction or faulty knot is brought.

Diagnostic codes

The code of malfunction is stored in memory before deleting of contents of cells of memory, or before malfunction elimination.

At ignition inclusion the control lamp of ABS system lights up, and after start-up of the engine dies away. If the lamp continues to burn, in ABS system malfunction is registered.

For access to codes of refusals the ignition key transfer to the situation OFF (the engine does not work). In Nippondenso system get a crossing point (look the photo) conclusions of the diagnostic socket. On systems of both types перемкните conclusions Е1 and the socket Hardware, the ignition key transfer to the situation ON (the engine is not started) and consider codes.

Crossing point of the diagnostic socket of Nippondenso ABS system

1. Crossing point

Peremykayemye conclusions on two types of used diagnostic sockets


Figures of a two-place code are determined by number of blinkings of the control lamp divided by a pause in 1,5 seconds (for example a code of 34-3 flashes, a pause of 1,5 seconds and 4 flashes).
The following code (in the presence of one more malfunction) appears in 2,5 seconds after the first. If the system is serviceable, the lamp blinks with the period of 0,5 pages.

Nature of refusal determine by the enclosed table.

After reading erase codes for what перемкните conclusions Е1 and the socket Hardware, the ignition key transfer to the situation ON (the engine it is not started) and press a pedal not less than 8 times during 5 seconds. Remove a crossing point and put into place a socket cover. Hand over the car in car-care center.

Table of codes of refusals of ABS system

CODE	NATURE OF MALFUNCTION	UNDERTAKEN ACTIONS
11	Break in a chain of the relay of the solenoid	To check the relay of the solenoidal valve and conducting of a chain of the relay
12	Short circuit of a chain of the relay of the solenoidal valve	The same
13	Break in a chain of the relay of the relay of the electric motor of the pump	To check the relay of the pump and conducting of a chain of the relay
14	Short circuit of a chain of the relay of the electric motor of the pump	The same
21	The chain of the solenoid of the right forward wheel is faulty	To check the solenoid of an aktyuator and a chain
22	The chain of the solenoid of the left forward wheel is faulty	The same
23	The chain of the solenoid of the right back wheel is faulty	The same
24	The chain of the solenoid of the left back wheel is faulty	The same
25	Break or short circuit in SMC1 chain	To check an aktyuator of system and a chain
26	Break or short circuit in SMC2 chain	To check an aktyuator of system and a chain
27	Break or short circuit in SRC1 chain	To check an aktyuator of system and a chain
28	Break or short circuit in SRC2 chain	To check an aktyuator of system and a chain
31	The sensor of speed of the right forward wheel is faulty	To check sensors of speed, conducting and the sensor socket
31	The signal from the sensor of speed of the right forward wheel does not arrive	To check the sensor of speed, conducting and the sensor socket
32	The signal from the sensor of speed of the left forward wheel does not arrive	The same
33	The signal from the sensor of speed of the right back wheel does not arrive	The same
34	The signal from the sensor of speed of the left back wheel does not arrive	The same
35	Break in a chain of the sensor of speed of the right forward wheel	The same
36	Break in a chain of the sensor of speed of the left forward wheel	The same
37	The number of a teeth of a rotor of the sensor of speed does not correspond to the normal	To check serviceability of a rotor of the sensor (existence of all teeth)
38	Break in a chain of the sensor of speed of the right back wheel or in the sensor.	To check the sensor of speed, conducting and the sensor socket
39	Break in a chain of the sensor of speed of the left back wheel or in the sensor	To check the sensor of speed, conducting and the sensor socket
41	Too low voltage on the battery	Check charge system: the generator (see subsection 3.4.10), the battery (see subsection 3.4.9), a tension regulator (see subsection 3.4.11).
43	Refusal of a control system by an unblocking of brakes	Check all wires and ABS system sockets
44	Break or short circuit in a NE signal chain	Check all wires and sockets from the ABS system control unit
49	Break in a chain of the switch of a signal of braking or in the switch	Check the switch and a switch chain
51	The aktyuator electric motor is blocked	Check existence of short circuit in an electric motor and relay chain, check the battery
53	PCM chain refusal	Check all wires and sockets from the ABS system control unit
58	Break in a chain of the switch of a signal of braking or in the switch	Check the switch and a switch chain
61	Refusal of a control system by the engine	Check codes of refusals of a control system of the engine (see subsection 7.2.)
62	Failure of the control unit	Repair or control unit replacement is required
The lamp burns continuously	Failure of the control unit	Repair or control unit replacement is required