DTC P0793: Intermediate Shaft Speed Sensor "A": Procedure

WARNING: This page is about a different car, the 2011 Toyota Matrix. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT SPEED SENSOR INSTALLATION
1. Check the speed sensor installation.
  OK
  
  The installation bolt is tightened properly and there is no clearance between the sensor and transaxle case.
  
  Fig 1: Checking Clearance Between Sensor And Transaxle Case
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG → See step 5

OK: Go to next step

INSPECT SPEED SENSOR (NC)

Disconnect the speed sensor connector from the transaxle.

Fig 2: Inspecting B28 Speed Sensor Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	560 to 680 Ω

NG → See step 5

OK: Go to next step

CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM)

Connect the speed sensor connector.

Fig 3: Checking B29 ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the ECM connector.

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

Standard resistance

Tester Connection	Condition	Specified Condition
B29-101 (NC+) - B29- 102 (NC-)	20°C (68°F)	560 to 680 Ω

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

Standard resistance (Check for short)

Tester Connection	Condition	Specified Condition
B29-101 (NC+) - Body ground	Always	10 kΩ or higher
B29-102 (NC-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 4

REPLACE ECM. Refer to REMOVAL
REPLACE SPEED SENSOR (NC). Refer to REMOVAL