Diagnosis Of The Oil Pressure Gage - GMC G Service Manual

DIAGNOSIS OF THE OIL PRESSURE GAGE

OIL PRESSURE GAGE INOPERATIVE OR INACCURATE
GAGE RESPONDS TO
TESTER ACCU RATELY
REPLACE
SENDER
J24538-A G AG E TESTER
DISCO NNECT O IL PRESSURE
GAGE SENDER WIRE.
CO NNEC T J24538-A TESTER TO
SEND ER W IR E O R TO GROUND.
TURN IGNITION ON.
GAGE RESPO NDS TO
T E S TER INACCURATELY
DISCONNECT O IL PRESSU RE GAGE LEAD
AT ENG INE HARNESS CONNECTOR.
CONNECT J24538-A TESTER TO
LEAD THAT GOES TO GAGE.
GAGE SHOULD READ SLIGHTLY
BELOW MIDSCALE W ITH 90 OHMS
FROM J24538-A TESTER.
READING
CO RREC T
CHECK W IRING
TO SENDER FOR
LOOSE C O N NEC ­
TION AND/OR
DAMAGED WIRING.
REPAIR AS
NECESSARY.
Figure 2 — Diagnosis of the Oil Pressure Gage
INSTRUMENT PANEL 8C-5
DISCO NNECT OIL PRESSU RE
GAGE LEAD AT ENGINE
HARNESS CONNECTOR. CO N ­
NECT J24538-A TESTER TO
LEAD TH AT GOES TO GAGE.
GAGE
REPONDS TO
TESTER
ACCURATELY
READING
INCORRECT
CHECK W IR ING
BETW EEN
REM O VE GAGE.
SENDER C ON­
CHECK FOR
NECTOR AND
LOOSE NUTS
ENGINE
AT GAGE
HARNESS
TERMINALS.
CONNECTOR.
REPAIR AS
NECESSARY.
GAGE DOES NOT
RESPOND
GAGE DOES
NOT
RESPOND
REM O VE
GAGE.
CHECK FOR
LOOSE OR
OPEN CON­
NECTIONS
AT GAGE
TERM IN ALS
OR INSTRU­
M ENT
CLUSTER
CONNECTOR.
REPAIR
CONNEC TIO NS
AND REINSTALL
GAGE
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