DTC C1916: Malfunction in Rear Active Stabilizer Control ECU Local CAN Transmission: Procedure

1. Disconnect the A49 front active stabilizer control ECU connector.
   Fig 1: Identifying A49 Front Active Stabilizer Control ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A49-1 (LCN+) - A49-8 (LCN-)	Engine switch off	54 to 69 Ω
   A49-2 (CANH) - A49-3 (CANL)	Engine switch off

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the e1 rear active stabilizer control ECU connector.
   Fig 2: Identifying e1 Rear Active Stabilizer Control ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   e1-1 (LCN+) - e1-8 (LCN-)	Engine switch off	54 to 69 Ω
   e1-2 (CANH) - e1-3 (CANL)	Engine switch off

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the A23 power steering ECU connector.
   Fig 3: Identifying A23 Power Steering ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A23-1 (CAN+) - A23-8 (CAN-)	Engine switch off	54 to 69 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the A40 steering control ECU connector.
   Fig 4: Identifying A40 Steering Control ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   A40-4 (CAN+) - A40-9 (CAN-)	Engine switch off	54 to 69 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Turn the engine 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 engine 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 C193D is output	A
   DTC is not output	B

B → CHECK INTERMITTENT PROBLEMS 

A → See step   6