Suzuki Liana RH413, Service Manual

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Engine Electrical Devices: 1C-2
Engine Control Module (ECM) Removal and
Installation
S3RH0A1306005
CAUTION
!
As ECM consists of precision parts, be
careful not to expose it to excessive shock.
Removal
1) Disconnect battery negative cable at battery.
2) Disable air bag system, refer to “Disabling Air Bag
System in Section 8B”.
3) Remove glove box, referring to Step 5) of “Removal”
under “Instrument Panel Removal and Installation in
Section 9C”.
4) Disconnect connectors (1) from ECM while releasing
connectors lock.
5) Remove ECM from body after removing its nuts (2).
NOTE
Be careful not to damage ventilation duct.
Installation
Reverse removal procedure noting the following:
• Connect connectors to ECM securely until a click is
heard.
• When installing each part, be careful not to catch any
cable or wiring harness.
Manifold Absolute Pressure (MAP) Sensor Inspection
S3RH0A1306007
1) Disconnect connector from MAP sensor.
2) Remove MAP sensor.
3) Arrange 3 new 1.5 V batteries (2) in series (check that total voltage is 4.5 – 5.0 V) and connect its positive terminal
to “Vin” terminal of sensor and negative terminal to “Ground” terminal. Then check voltage between “Vout” and
“Ground”.
Also, check if voltage reduces when vacuum is applied up to 400 mmHg by using vacuum pump (3).
If check result is not satisfactory, replace MAP sensor (1).
Output voltage (When input voltage is 4.5 – 5.5 V, ambient temp. 20 – 30
°
C, 68 – 86
°
F)
4) Install MAP sensor (1) securely.
5) Connect MAP sensor (1) connector securely.
1
2
I2RH0B130004-01
Altitude (Reference) Barometric pressure Output voltage
(ft) (m) (mmHg) (kPa) (V)
0 – 2000 0 – 610 760 – 707 100 – 94 3.3 – 4.3
2001 – 5000 611 – 1524
Under 707
over 634
94 – 85 3.0 – 4.1
5001 – 8000 1525 – 2438
Under 634
over 567
85 – 76 2.7 – 3.7
8001 – 10000 2439 – 3048
Under 567
over 526
76 – 70 2.5 – 3.3
IYSQ01130006-01