DESCRIPTION While the engine is being cranked, current flows from terminal STAR of the certification ECU (smart key ECU assembly) to the park/neutral position switch assembly and to terminal STA of the ECM (STA signal). WIRING DIAGRAM Refer to DTC P061512. Click here CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE
(a) Check if the engine can be cranked.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Starter SW. Powertrain > Engine > Data List
(e) Check the value displayed on the Techstream when the engine switch is turned on (IG) and the engine is cranked. OK:
(a) Inspect the ST relay. Click here
(a) Inspect the starter assembly. Click here
(a) Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly. (b) Disconnect the starter assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Disconnect the cable from the negative (-) battery terminal. (b) Disconnect the cable from the positive (+) battery terminal. (c) Disconnect the starter assembly connector. (d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly. (b) Disconnect the certification ECU (smart key ECU assembly) connector. (c) Disconnect the park/neutral position switch assembly connector. (d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Inspect the park/neutral position switch assembly. Click here
(a) Disconnect the park/neutral position switch assembly connector. (b) Disconnect the ECM connector. (c) Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly. (d) Disconnect the certification ECU (smart key ECU assembly) connector. (e) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Disconnect the park/neutral position switch assembly connector. (b) Disconnect the certification ECU (smart key ECU assembly) connector. (c) Disconnect the ECM connector. (d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Starter SW. Powertrain > Engine > Data List
(e) Check the value displayed on the Techstream when the engine switch is turned on (IG) and the engine is cranked. OK:
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Airbag System(for Gasoline Model): Short in Curtain Shield Airbag (RH) Squib Circuit (B1830-B1833)
DESCRIPTION The curtain shield squib RH circuit consists of the airbag ECU assembly and curtain shield airbag assembly RH. The airbag ECU assembly uses this circuit to deploy the airbag when deployment conditions are met. These DTCs are stored when a malfunction is detected in the curtain shield squ ...