BE/Body Electrical System — Inspection of vacuum circuit (7M-GTE only)., page 77

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Inspection of vacuum circuit (7M-GTE only).

Turn ignition switch off.

VACUUM HOSE

Are there cracks or other damage on the
vacuum hose?
No
Yes
Replace vacuum hose.

VACUUM SWITCH
No

INSPECT VACUUM SWITCH CIRCUIT
Disconnect connector from vacuum switch.
Is there continuity between terminal 1 of
vacuum switch and body ground?
No
• Vacuum switch improperly installed.
• Body ground faulty.

Yes

INSPECT VACUUM SWITCH OPERATION
Is vacuum switch normal?
(See page BE-84)
No
Replace vacuum switch.

Yes

VACUUM PUMP

INSPECT GROUND CONNECTION
Disconnect connector from vacuum pump.
Is there continuity between terminal 2 of wire
harness side connector and body ground?
No
• Open circuit in wire harness between
  terminal 2 and body ground.
• Body ground faulty.

Yes

INSPECT VACUUM PUMP OPERATION
Is vacuum pump operation normal?
(See page BE-84)
No
Replace vacuum pump.

Yes

Connect connector to vacuum switch and
pump.

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