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Home >> Toyota >> 2000 >> RAV4 Base, AWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Control System Self-Diagnostics) >> Diagnostic Tests >> DTC P1127: Electronic Throttle Control System Actuator Power Source Circuit >> Diagnosis & Repair
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Diagnosis & Repair

WARNING: This page is about a different car, the 2000 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove and inspect THROTTLE fuse (15-amp) from left-side engine compartment fuse block. If fuse is okay, go to next step. If fuse is blown, check for cause of fuse to blow. See WIRING DIAGRAMS article. Repair as necessary and retest.
  2. Access ECM behind glove box. Using DVOM, backprobe and measure voltage between ground and terminal No. 7 (Yellow/Black wire) at ECM harness connector E9. See Figure. If voltage is 9-14 volts, replace ECM. If voltage is not 9-14 volts, repair open in power source circuit. See WIRING DIAGRAMS article.
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