Engine Electrical Devices; Repair Instructions; Engine Control Module (Ecm) Removal And Installation; Manifold Absolute Pressure (Map) Sensor Inspection - Suzuki GRAND VITARA Owner's Manual

1C-1 Engine Electrical Devices:

Engine Electrical Devices

Engine Control Module (ECM) Removal and
Installation
CAUTION
!
As ECM consists of precision parts, be
careful not to expose it to excessive shock.
Removal
1) Disconnect negative cable at battery.
2) Remove ECM cover.
3) Disconnect connectors from ECM as follows.
a) Push lock (1) to release locking of lock lever (2).
b) Turn lock lever to arrow direction until it stops.
1
4) Remove ECM (1) from its bracket by removing its
mounting bolts (2).
2
Installation
Reverse removal procedure noting the following:
• Connect connectors to ECM as follows.
a. Make sure that lock lever of ECM connector is
unlock position.

Repair Instructions

S5JB0A1306004
2
I4RS0A130003-01
2
1
2
I5JB0A130012-03
I4RS0B130021-01
b. Insert ECM connectors to ECM until it stops with
unlocked lock lever.
c. Lock ECM connectors securely by pulling its lock
lever up.
Manifold Absolute Pressure (MAP) Sensor
Inspection
1) Disconnect connector from MAP sensor.
2) Remove MAP sensor from intake manifold.
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)
Altitude
Barometric pressure
(Reference)
(ft) (m) (mmHg)
0 – 2000 0 – 610 760 – 707
2001 – 611 – Under 707
5000 1524 over 634
5001 – 1525 – Under 634
8000 2438 over 567
8001 – 2439 – Under 567
10000 3048 over 526
I4RS0B130022-01
I4RS0A130004-01
S5JB0A1306005
Output
voltage
(kPa) (V)
100 – 94 3.3 – 4.3
94 – 85 3.0 – 4.1
85 – 76 2.7 – 3.7
76 – 70 2.5 – 3.3