Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Confirm that DTC C1571/71 has been cleared by activating test mode after the repair is completed.

READ VALUE USING TECHSTREAM
1. Connect a Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the tester on.
4. Enter the following menus: Chassis / EMPS / Data List.
5. According to the display on the tester, read the "Data List".
  OK: Speed values are same.
  
  HINT:
  
  There is tolerance of +/-10 % in the speedometer indication.
OK: CHECK INTERMITTENT PROBLEMS

NG: Go to Next Step

CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - COMBINATION METER)

Disconnect the connectors from the power steering ECU and the combination meter.

Fig 1: Identifying Power Steering ECU And Combination Meter Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
SPD (D31-5) - 4P OUT (D1-16)	Always	Below 1 Ω
SPD (D31-5) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO COMBINATION METER (FOR SEDAN) or COMBINATION METER (FOR HATCHBACK)