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Junergy Automotive Third Generation 4-Channel ABS (JN144-3)

This generation of product was successfully developed in 2012, with the addition of KWP2000 compliant K-line diagnostic function.

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This generation of product was successfully developed in 2012, with the addition of KWP2000 compliant K-line diagnostic function. The anti lock brake system is abbreviated as ABS. The function is to automatically control the braking force of the brake when the car brakes, so that the wheels are not locked and are in a rolling and sliding state (with a slip rate of about 20%), to ensure that the adhesion between the wheels and the ground is at its maximum value.
The corresponding relationship and repair code between the identification SID and failure mode identification FMI of the K-line diagnostic subsystem and the flashing code of the ABS warning light are shown in the table below:

position	SID	FMI	FLASH CODES	Fault and cause (displayed on the K-line diagnostic instrument)	Repair code
Left Front sensor And ring gear A1升	1	1	32	Sensor gap large, signal below normal	S1
	1	10	32	Wheel speed interruption	S2
	1	7	32	Looseness	S3
	1	3	42	Sensor open circuit, high DC potential	S4
	1	4	42	Sensor short circuit, signal is 0	S5
	1	2	52	Abnormal wheel speed (tremor)	S6
	1	13	52	Tire not suitable	S7
	1	0	52	Wire Mismatch	S8
	1	15	52	Frequency too high	S9
	1	8	62	Incorrect gear ring (damaged gear ring)	S10
right front sensor And ring gear A1r	2	1	31	Sensor gap large, signal below normal	S1
	2	10	31	Wheel speed interruption	S2
	2	7	31	Looseness	S3
	2	3	41	Sensor open circuit, high DC potential	S4
	2	4	41	Sensor short circuit, signal is 0	S5
	2	2	51	Abnormal speed (tremor)	S6
	2	13	51	Tire not suitable	S7
	2	0	51	Wire Mismatch	S8
	2	15	51	Frequency too high	S9
	2	8	61	Incorrect gear ring (damaged gear ring)	S10

Left Rear sensor And ring gear A3l	5	1	34	Sensor gap large, signal below normal	S1
	5	10	34	Wheel speed interruption	S2
	5	7	34	Looseness	S3
	5	3	44	Sensor open circuit, high DC potential	S4
	5	4	44	Sensor short circuit, signal is 0	S5
	5	2	54	Abnormal speed (tremor)	S6
	5	13	54	Tire not suitable	S7
	5	0	54	Wire Mismatch	S8
	5	15	54	Frequency too high	S9
	5	8	64	Incorrect gear ring (damaged gear ring)	S10
Right Rear sensor And ring gear A3r	6	1	33	Sensor gap large, signal below normal	S1
	6	10	33	Wheel speed interruption	S2
	6	7	33	Looseness	S3
	6	3	43	Sensor open circuit, high DC potential	S4
	6	4	43	Sensor short circuit, signal is 0	S5
	6	2	53	Abnormal speed (tremor)	S6
	6	13	53	Tire not suitable	S7
	6	0	53	Wire Mismatch	S8
	6	15	53	Frequency too high	S9
	6	8	63	Incorrect gear ring (damaged gear ring)	S10
Left front valve A1l	7	5	22	Open circuit in solenoid valve coil	M1
	7	6	22	Short circuit between solenoid valve coil and low end	M2
	7	3	22	Short circuit between solenoid valve coil and high end	M3
Right front valve A1r	8	5	21	Open circuit in solenoid valve coil	M1
	8	6	21	Short circuit between solenoid valve coil and low end	M2
	8	3	21	Short circuit between solenoid valve coil and high end	M3
Left rear valve A3l	11	5	24	Open circuit in solenoid valve coil	M1
	11	6	24	Short circuit between solenoid valve coil and low end	M2
	11	3	24	Short circuit between solenoid valve coil and high end	M3
Right rear valve A3r	12	5	23	Open circuit in solenoid valve coil	M1
	12	6	23	Short circuit between solenoid valve coil and low end	M2
	12	3	23	Short circuit between solenoid valve coil and high end	M3
ASRDifferential valve	18	5	72	Open circuit in solenoid valve coil	M4
ASRDifferential valve	18	6	72	Short circuit of solenoid valve coil	M5
Retarder brake relay	13	5	73	Relay coil open circuit	R1
Retarder brake relay	13	6	73	Relay coil short circuit	R2
ABSlamp	23	5	74	ABSLamp open circuit	L1
ABSlamp	23	6	74	ABSLamp short circuit	L2
ECUpower supply	90	5	81	Low voltage	E1
ECUpower supply	90	6	82	High voltage	E2

The repair code and key repair points are shown in the table:

Repair code	Repair points
S1	GAP
S2	Check if the sensor connector is in good contact
S3	Check if the sensor fasteners are secure
S4	Check if the sensor resistance is too high, if the connectors are loose, and if the cables are open circuit
S5	Check if the sensor resistance is too low and if the cable is short circuited
S6	Check if the end face runout of the gear ring is too large. Installation standard requirement ≤ 0.15mm
S7	Check if the models of the four tires are consistent
S8	Check the connection between the pressure regulator and the sensor using methods 7.2 and 7.3, and correct any misalignment.
S9	Check for iron chips on the sensor and gear ring end face
S10	Check if there is any damage to the end face of the ring
M1	Check whether the resistance of the solenoid valve coil is too high, whether the connector is loose, and whether the cable is open circuit
M2	Check if the resistance of the solenoid valve coil is too low and if the cable is short circuited
M3	Check if the solenoid valve cable is short circuited to the positive end of the power supply
M4	Check whether the resistance of the ASR differential valve coil is too high, whether the connector is loose, and whether the cable is open circuit
M5	Check if the resistance of the ASR differential valve coil is too low and if the cable is short circuited
R1	Check if the resistance of the DBR relay coil is too high and if the cable is open circuit
R2	Check if the resistance of the DBR relay coil is too low and if the cable is short circuited
L1	Replace the ABS light with a good one, and if it still doesn't work properly, check if the cable is open circuit
L2	Replace the ABS light with a good one, and if it still doesn't work properly, check if the cable is short circuited
E1	Check if the power supply voltage is too low and if the cable is open circuit
E1	Check if the power supply voltage is too high and restore the power supply to its normal value of 20-30V

For further details, please contact us
Consultation hotline:+86-13908307100, 13752990427
Office phone:+86 023 63115900, 63115950
Fax:+86-023-67881453
Website: www.jnabs.com
Email: jnabs@jnabs.com
Address: 25th floor, Qibo Building, No. 99 Jinyu Avenue, North New District, Chongqing.

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