TSRM/MK3 Supra/Repair Manual
Repair ManualWiring DiagramsCommunity Fixes
p.091

SR/Steering, page 92

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p.093
Steering — MK3 Supra Steering, page 92
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Page text (OCR transcript)
SR-92

STEERING — Power Steering (Progressive Power Steering)

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Yes

Check 2.
Check that there is continuity between the ECU terminal GND and body ground.

GND

SP2197

Yes                                           No

• Open circuit in wire harness between the ECU terminal GND and body ground.
• Body ground faulty.

Check 3.
(a) Jack up the rear wheel on one side.
(b) Connect an ohmmeter between the ECU connector terminals SPD and GND.
(c) Spin the rear wheel and check that the meter needle deflects from 0 Ω to ∞ Ω.

SPD
GND

SP2088

Yes                                           No

• Open or short circuit in wire harness between the ECU terminal SPD and speed sensor.
• Speed sensor faulty (See page BE-84).

Check 4.
Check that there is no continuity between terminals SOL ① or SOL ② and GND.

GND

SOL①
or
SOL②

SP2199

Yes                                           No

• Short circuit in wire harness between the terminals SOL ① and SOL ②.
• Solenoid valve faulty.

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