Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
3Zr-Fae Engine Control System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)
CHECK HARNESS AND CONNECTOR (ECM - ST RELAY)
SFI SYSTEM - Starter Signal Circuit |
DESCRIPTION
While the engine is being cranked, current flows from terminal ST1 of the ignition switch to the park/neutral position switch (for CVT) or clutch start switch (for Manual Transaxle) and also flows to terminal STA of the ECM (STA Signal).WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
- HINT:
- This chart is based on the premise that the engine can be cranked normally. If the engine does not crank normally, proceed to the Problem Symptoms Table (RAV4_ACA30 RM000000PDG0GRX.html).
| 1.READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.
Read the value displayed on the tester when the ignition switch is ON and when the engine is cranking.
- OK:
Ignition Switch Position Starter Signal ON Close (OFF) START Open (ON)
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| OK | ||
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| 2.CHECK HARNESS AND CONNECTOR (ECM - ST RELAY) |
Remove the ST relay from the No. 7 relay block (for LHD).
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Remove the ST relay from the No. 8 relay block (for RHD).
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition ST relay terminal 1 - A12-48 (STA) Always Below 1 Ω
- Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition ST relay terminal 1 or A12-48 (STA) - Body ground Always 10 kΩ or higher
Reinstall the ST relay.
Reconnect the ECM connector.
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| OK | ||
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