Table of Contents
Advertisement
INSPECTION
Step
1
Was "ENGINE DIAG. FLOW TABLE" per-
formed?
2
Check MAP Sensor and Its Circuit.
1) Connect scan tool to DLC with ignition
switch OFF.
2) Turn ignition switch ON.
3) Check intake manifold pressure.
See Fig. 1.
Is it 114 kPa or more or 43 kPa or less?
MAP SENSOR INDIVIDUAL CHECK
1) Disconnect connector from MAP sensor (1).
2) Remove MAP sensor (1).
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).
Output voltage (When input voltage is 4.5 – 5.5 V, ambient
temp. 20 – 30°C, 68 – 86°F)
2 000
2 001
5 000
5 001
8 000
8 001
10 000
If check result is not satisfactory, replace MAP sensor (1).
4) Install MAP sensor (1) securely.
5) Connect MAP sensor (1) connector securely.
Action
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-53
ALTITUDE
(Reference)
(ft)
(m)
(mmHg)
0
0
|
|
610
611
Under 707
|
|
over 634
1 524
1 525
Under 634
|
|
over 567
2 438
2 439
Under 567
|
|
over 526
3 048
Yes
Go to Step 2.
Go to Step 3.
BAROMETRIC
OUTPUT
PRESSURE
VOLTAGE
(kPa)
760
100
3.3 – 4.3
|
|
707
94
94
3.0 – 4.1
|
85
85
2.7 – 3.7
|
76
76
2.5 – 3.3
|
70
No
Go to "ENGINE DIAG.
FLOW TABLE".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0A.
(V)
Advertisement
Table of Contents
