SsangYong Stavic / SsangYong Rodius (2005 year). Manual — part 56

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

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 from various 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 intake manifold resonance flap, the camshaft actuator, the
canister purge valve, etc., by controlling the ground circuit.

ENGINE CONTROL MODULE

1. Cover

2. Plate

3. Connector

4. Flat 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

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

SERIAL DATA COMMUNICATION

Failur Code

Description

Trouble Area

Maintenance Hint

CAN communication

failure: TCU (A/T only)

When CAN signal message

missing or implausibility for TCU

unit or not initialized condition

26

• Inspection the TCM unit with CAN

connection

• Inspection the ECM pin 38, 37 about

short circuit or open with bad contact

• Inspection the ECM

CAN communication

failure: ABS

When CAN signal message

missing or implausibility for ABS

unit or not initialized condition

24

• 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 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

CAN communication

failure: ASR/MSR

When CAN signal message

missing or implausibility for

ASR/MSR unit or not

initialized condition

23

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

Failur Code

30

27

60

59

31

Description

CAN communica-

tion failure: ID 208h

not plausible

CAN communica-

tion failure: TOD

(E32 only)

CAN communica-

tion failure: ASR

data transmission

not plausible

CAN communica-

tion failure: MSR

data transmission

not plausible

CAN communica-

tion failure: commu-

nication initializa-

tion failure

Trouble Area

When CAN signal message

missing or implausibility for

ABS/ESP unit or not

initialized condition

When CAN signal message

missing or implausibility for

TOD unit or not initialized

condition

When CAN signal message

missing or implausibility for

ASR unit 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

each unit

(ABS, ASR, TCM, TOD etc.)

or not initialized condition

Maintenance Hint

• Inspection the ABS/ESP unit with CAN

connection

• Inspection the ECM pin 38, 37 about short

circuit or open with bad contact

• Inspection the ECM

• Inspection the TOD unit with CAN connec-

tion

• Inspection the ECM pin 38, 37 about short

circuit or open with bad contact

• Inspection the ECM

• Inspection the Engine Control Module

(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 each control unit with CAN

connection

• Inspection the ECM pin 38, 37 about short

circuit or open with bad contact

• Inspection the ECM

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 transmit-
ting 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.

29

CAN communica-

tion failure: ID 200h

not plausible

When CAN signal message

missing or implausibility for

ABS/ESP unit or not initial-

ized condition

• Inspection the ABS/ESP unit with CAN

connection

• Inspection the ECM pin 38, 37 about short

circuit or open with bad contact

• Inspection the ECM

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

INTERNAL FAILURE

Failur Code

Description

Trouble Area

Maintenance Hint

• Inspection the coding condition

through scan tool

• Inspection the Engine Control

Module (ECM)

• Inspection the CAN line

• Inspection the TCM

Transmission coding

failure

When faulty of variant coding of

transmission

21

ECM failure (RAM)

When malfunction of random

access memory - ECM internal

error

136

Uncoded/unprogramed

ECM

When malfunction of ECM

coding-required ECM

encoding

142

ECM failure (EPROM)

When malfunction of ECM

internal

137

ECM failure (EEPROM/

Flash - EPPOM

checksum failure)

143

ECM failure (coding ID

checksum failure)

144

ECM failure (coding

checksum failure)

145

ECM failure

(programming

checksum failure)

146

• Inspection the ECM

• Fulfill the ECM variant coding

• Inspection the ECM