DTC C192F: Rear Active Stabilizer Control ECU Data Malfunction: Procedure

1. Disconnect the y1 rear active stabilizer control ECU connector.
   Fig 1: Identifying Rear Active Stabilizer Control ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance

   Tester Connection	Specified Condition
   y1-1 (LCN+) - y1-8 (LCN-)	54 to 69 Ω
   y1-2 (CANH) - y1-3 (CANL)	54 to 69 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the A58 front active stabilizer control ECU connector.
   Fig 2: Identifying Front Active Stabilizer Control ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance

   Tester Connection	Specified Condition
   A58-1 (LCN+) - A58-8 (LCN-)	54 to 69 Ω
   A58-2 (CANH) - A58-3 (CANL)	54 to 69 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Turn the power switch OFF.
2. Exchange the front active stabilizer control ECU with the rear active stabilizer control ECU.
3. Connect Techstream to the DLC3.
4. Turn the power switch ON (IG) and press the Techstream main switch ON.
5. Clear the DTC. Refer to DTC CHECK / CLEAR .
6. Check for DTC.
   RESULT
   
   

   Result	Proceed to
   DTC is not output	A
   DTC C1907 is output	B

A → CHECK INTERMITTENT PROBLEMS 

B → REPLACE REAR ACTIVE STABILIZER CONTROL ECU