TSRM/MK3 Supra/Repair Manual
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p.093

FI/EFI System — Air Induction System Air Flow Meter (7M-GE), page 94

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Air Induction System Air Flow Meter (7M-GE) — MK3 Supra EFI System, page 94
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Page text (OCR transcript)
FI-94

EFI SYSTEM — Air Induction System

AIR INDUCTION SYSTEM
Air Flow Meter (7M-GE)

POTENTIONMETER

Damping Chamber
Compensation Plate

Return Spring
Air Temp.
Sensor

FROM AIR
CLEANER

Measuring Plate

TO AIR
INTAKE
CHAMBER

AIR
CLEANER
SIDE

Air By-Pass
Passage

Compensation Plate

AIR
INTAKE
CHAMBER
SIDE

Measuring Plate

Air By-Pass Passage

FI12M-FI04431

FC E1E2 VC E2 VS THA

Ohmmeter

FI0432

FC E1 E2 VC E2 VS THA

FI0632

ON-VEHICLE INSPECTION

INSPECT RESISTANCE OF AIR FLOW METER

(a) Disconnect the air flow meter connector.

(b) Using an ohmmeter, measure the resistance between each terminal.

Between terminals | Resistance (Ω) | Temp. °C (°F)
E2 — VS | 200 - 600 | —
E2 — VC | 200 - 400 | —
E2 — THA | 10,000 - 20,000 | -20 (-4)
 | 4,000 - 7,000 | 0 (32)
 | 2,000 - 3,000 | 20 (68)
 | 900 - 1,300 | 40 (104)
 | 400 - 700 | 60 (140)
E1 — FC | Infinity | —

If the resistance is not as specified, replace the air flow meter.

(c) Reconnect the air flow meter connector.