SsangYong Rexton. Service manual — part 438
SSANGYONG Y200
1F2-76 M161 ENGINE CONTROLS
ENGINE CONTROL MODULE
YAD1F610
The Engine Control Module (ECM), located inside the right side kick panel, is the control center of the fuel
injection system. It constantly looks at the information fromvarious sensors and controls the systems that affect
the vehicle’s performance. Engine rpm and air mass are used to measure the air intake quantity resulting in fuel
injection metering. The ECM also performs the diagnostic functions of the system. It can recognize operational
problems, store failure code(s) which identify the problem areas to aid the technician in making repairs.
There are no serviceable parts in the ECM. The calibrations are stored in the ECM in the Programmable Read
Only Memory (PROM).
The ECM supplies either 5 or 12 volts to power the sensors or switches. This is done through resistance in the
ECM which are so high in value that a test light will not come ON when connected to the circuit. In some cases,
even an ordinary shop voltmeter will not give and accurate reading because its resistance is too low. You must
use a digital voltmeter with a 10 Mohm input impedance to get accurate voltage readings. The ECM controls
output circuits such as the ignition coils, the fuel injectors, the fuel pump relay, the camshaft actuator, the
canister purge valve, etc., by controlling the ground circuit.
1 Cover
2 Plate
3 Connector
4 Plat Pin
Vehicle Side : No. 1-12
Engine Side : No. 61-72
5 Pin
Vehicle Side : No. 13-60
Engine Side : No. 73-120
A Vehicle Side Connector : Black
B Engine Side Connector : Gray
SSANGYONG Y200
1F2-78 M161 ENGINE CONTROLS
SERIAL DATA COMMUNICATION
YAD1F620
Failure
Code
Description
Trouble Area
Maintenance Hint
CAN communication
failure: ASR/MSR
CAN communication
failure: ABS
CAN communication
failure: TCU (A/T only)
When CAN signal message
missing or implausibility for
ASR/MSR unit or not
initialized condition
When CAN signal message
missing or implausibility for
ABS unit or not initialized
condition
When CAN signal message
missing or implausibility for
TCU unit or not initialized
condition
•
Inspection the ASR unit with CAN
connection
•
Inspection the Engine Control Module
(ECM) pin 38, 37 about short circuit or
open with bad contact
•
Inspection the ECM
•
Inspection the ABS unit with CAN
connection
•
Inspection the ECM pin 38, 37 about
short circuit or open with bad contact
•
Inspection the ECM
•
Inspection the TCM unit with CAN
connection
•
Inspection the ECM pin 38, 37 about
short circuit or open with bad contact
•
Inspection the ECM
23
24
26
M161 ENGINE CONTROLS 1F2-79
SSANGYONG Y200
Failure
Code
Description
Trouble Area
Maintenance Hint
CAN communication
failure: ID 200h not
plausible
CAN communication
failure: ID 208h not
plausible
CAN communication
failure: communication
initialization failure
CAN communication
failure: MSR data
transmission not
plausible
CAN communication
failure: ASR data
transmission not
plausible
When CAN signal message
missing or implausibility for
ABS/ABD unit or not initialized
condition
When CAN signal message
missing or implausibility for
ABS/ABD unit or not initialized
condition
When CAN signal message
missing or implausibility for
each unit (ABS, ASR, TCM,
TOD etc.) or not initialized
condition
When CAN signal message
missing or implausibility for
MSR unit or not initialized
condition
When CAN signal message
missing or implausibility for
ASR unit or not initialized
condition
•
Inspection the ABS/ABD unit with CAN
connection
•
Inspection the ECM pin 38, 37 about
short circuit or open with bad contact
•
Inspection the ECM
•
Inspection the ABS/ABD unit with CAN
connection
•
Inspection the ECM pin 38, 37 about
short circuit or open with bad contact
•
Inspection the ECM
•
Inspection the each control unit with CAN
connection
•
Inspection the ECM pin 38, 37 about
short circuit or open with bad contact
•
Inspection the ECM
•
Inspection the MSR unit with CAN
connection
•
Inspection the Engine Control Module
(ECM) pin 38, 37 about short circuit or
open with bad contact
•
Inspection the ECM
•
Inspection the ASR unit with CAN
connection
•
Inspection the Engine Control Module
(ECM) pin 38, 37 about short circuit or
open with bad contact
•
Inspection the ECM
29
30
31
59
60
Circuit Description
The provision for communicating with the ECM is the Data Link Connector (DLC). It is located in the instrument
panel fuse block. The DLC is used to connect the scan tool. Battery power and ground is supplied for the scan
tool through the DLC. CAN line is used to communicate with the other module such as the Transmission Control
Module (TCM) and Transfer Case Control Unit (TCCU).
Keyword 2000 Serial Data Communications
Each bit of information can have one of two lengths: long or short. This allows vehicle wiring to be reduced by
transmitting and receiving multiple signals over a singles wire. The message carried on KWP 2000 data streams
are also prioritized. If two messages attempt to establish communications on the data line at the same time, only
the message with higher priority will must wait.
SSANGYONG Y200
1F2-80 M161 ENGINE CONTROLS
INTERNAL FAILURE
Failure
Code
Description
Trouble Area
Maintenance Hint
Transmission coding
failure
ECM failure (RAM)
Uncoded/ unprogramed
ECM
ECM failure (EPROM)
ECM failure (EEPROM/
Flash-EPPOM
checksum failure)
ECM failure (coding ID
checksum failure)
ECM failure (coding
checksum failure)
ECM failure (program-
ming checksum failure)
When faulty of variant coding
of transmission
When malfunction of random
access memory - ECM
internal error
When malfunction of ECM
coding-required ECM
encoding
When malfunction of ECM
internal
•
Inspection the coding condition through
scan tool
•
InspectiontheEngine ControlModule
(ECM)
•
Inspection the CAN line
•
Inspection the TCM
•
Inspection the ECM
•
Fulfill the ECM variant coding
•
Inspection the ECM
21
136
142
137
143
144
145
146
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