TROUBLE CODE DIAGNOSTICS - 454/502 MAG MPI & 8.2L MPI
SERVICE MANUAL NUMBER 23
Code 14 (3 of 3): Engine Coolant Temperature (ECT) Sensor Circuit
(Non-Scan)
STEP
ACTION
VALUE
YES
NO
PROCEED TO
CKT 410 open, faulty connection at ECM, or
faulty ECM.
5
6
–
–
–
–
Intermittent connections, faulty ECT sensor
(refer to chart below for sensor values).
Disconnect J-1 connector.
Is test light on?
7
Step 8
Step 9
8
9
CKT 410 shorted to ground.
–
–
–
–
CKT 410 shorted to sensor ground or faulty
ground.
Open sensor ground CKT 814, faulty connec-
tion at ECM, or faulty ECM.
10
–
–
ECT Sensor
Temperature - to - Resistance Values (Approximate)
°
F
°C
OHMS
210
160
100
70
40
20
100
70
38
20
4
-7
-18
-40
185
450
1,800
3,400
7,500
13,500
25,000
100,700
0
-40
Index
Page 5F-6
90-861326--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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