GENERAL SYSTEM DIAGNOSTICS
SERVICE MANUAL NUMBER 23
Discrete Input Circuit Check - Non-Scan 7.4L MPI Only (3 of 5)
TESTING GEAR LUBE MONITOR SWITCH
STEP
ACTION
VALUE
YES
NO
PROCEED TO
1.
Disconnect TAN/WHT wire from gear
lube monitor.
2. Empty gear lube from monitor.
1
3.
Check for continuity between TAN/WHT
wire and ground (–).
Is there continuity?
0 Ohms Step 2
Step 3
1.
2. Check for continuity between TAN/WHT
wire and ground (–).
Refill gear lube monitor.
2
Is there continuity?
0 Ohms Step 3
Step 4
3
4
Replace gear lube monitor. Verify repair.
Gear lube monitor switch is working properly.
–
–
–
–
TESTING TRANSMISSION TEMPERATURE SWITCH
STEP
ACTION
VALUE
YES
NO
PROCEED TO
1.
Disconnect both wires from transmission
temperature switch.
2.
(less than normal operating temperature).
Ensure switch is at a cool temperature
1
3.
Check for continuity between both termi-
nals.
Is there continuity?
0 Ohms Step 3
Step 2
1.
Heat the switch to a temperature high
enough to activate it. (Refer to Section 4D of
this manual for procedure).
2
2.
Check for continuity between both termi-
nals.
Is there continuity?
0 Ohms Step 4
–
Step 3
–
Replace transmission temperature switch.
Verify repair.
3
4
Transmission temperature switch is working
properly.
–
–
Index
Page 5E-100
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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