Toyota Yaris: Active Noise Control System / Crankshaft Position Sensor "A" No Signal (P033531)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Audio & Visual & Telematics / Audio / Video / Active Noise Control System / Crankshaft Position Sensor "A" No Signal (P033531)

DESCRIPTION

This DTC is output when a malfunction has occurred in the engine pulse signal system from the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P033531

Crankshaft Position Sensor "A" No Signal

Stereo component equalizer assembly detects malfunction in engine pulse signal system for 10 seconds or more continuously when engine speed is between 500 and 6000 rpm*

  • Harness or connector
  • ECM
  • Stereo component equalizer assembly

HINT:

*: Malfunction monitoring is not performed under the following conditions, in order to prevent erroneous detection.

  • After ignition switch is turned to ACC for 3 seconds or more.
  • After the auxiliary battery voltage returns to normal for 3 seconds.
  • Before 3 seconds have elapsed after auxiliary battery voltage has returned to normal.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The active noise control system troubleshooting procedure is based on the premise that the stop and start system, SFI system and smart key system is operating normally. Check the stop and start system, SFI system and smart key system first before troubleshooting the active noise control system.

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Active Noise Control > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Active Noise Control > Trouble Codes

OK:

DTC P033531 is not output.

Result

Proceed to

DTC P033531 is not output

A

DTC P033531 is output

B

A

USE SIMULATION METHOD TO CHECK

B

3.

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT EQUALIZER ASSEMBLY - ECM)

(a) Disconnect the O131 stereo component equalizer assembly connector.

(b) Disconnect the A106 ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

O131-3 (NEI) - A106-16 (NEO)

Always

Below 1 Ω

OK

REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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    Categories

    Liftgate/Trunk Lid

    WARNING

    Never allow a person to ride in the luggage compartment/trunk

    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

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