SSANGYONG Rexton Y200 Manual page 454

Failure
Description
Code
No. 1 knock sensor
signal failure
56
No. 2 knock sensor
signal failure
57
Circuit Description
The KS system is used to detect engine detonation, allowing the ECM to retard the ignition control spark timing
based on the KS signal being received. The KS signal's amplitude and frequency depend upon the amount of
knock being experienced. The ECM monitors the KS signal and can diagnose the KS sensor and circuitry.
Knock Sensor Resistance Inspection
1. Disconnect the coupling from ECM while the ignition switch is in "OFF" position.
2. Measure the resistance between the coupling terminal pin No. 118 and No. 117 and terminal pin No. 115 and
No. 114 using a multimeter.
Specified Value
Notice: Replace the KS if the measured values is out of the specified values. Check the connector and wire
connection between ECM and the KS if the measured values are normal.
SSANGYONG Y200
Trouble Area
When recognition in more than
control gain threshold at
normal operational condition of
other system during over 75
and 3,000 rpm running area
(cylinder 1, 2, 3)
When recognition in more than
control gain threshold at
normal operational condition of
other system during over 75
and 3,000 rpm running area
(cylinder 4, 5, 6)
>10 MΩ
M162 ENGINE CONTROLS 1F1-23
Maintenance Hint
•
Inspection the ECM pin 118, 117about
short circuit or open with bad contact
•
Inspection the KS 1 malfunction
•
Inspection the ECM
•
Inspection the ECM pin 115, 114 about
short circuit or open with bad contact
•
Inspection the KS 2 malfunction
•
Inspection the ECM
YAD1F190