DTC C193D: Malfunction in Front Active Stabilizer Control ECU Local CAN Transmission: Procedure

1. Turn the power switch off.
2. Disconnect the E active stabilizer battery current sensor connector.
   Fig 1: Identifying Active Stabilizer Battery Current Sensor Connector Terminal

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

   Standard resistance

   Tester Connection	Condition	Specified Condition
   2 (BSV) - 4 (BSG)	Always	3 to 10 kΩ
   2 (BSV) - 3 (BSC)	Always	Below 0.5 kΩ
   3 (BSC) - 4 (BSG)	Always	3 to 10 kΩ
   1 (BST) - 4 (BSG)	Always	1.5 to 2.5 kΩ

NG → REPLACE ACTIVE STABILIZER BATTERY CURRENT SENSOR 

OK: Go to next step 

1. Disconnect the z20 rear active stabilizer control ECU connector.
2. Disconnect the E active stabilizer battery current sensor connector.
   Fig 2: Identifying z20 Rear Active Stabilizer Control ECU Connector Terminals

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

   Standard resistance

   Tester Connection	Condition	Specified Condition
   z20-4 (BSC) - E-3 (BSC)	Always	Below 1 Ω
   z20-4 (BSC) or E-3 (BSC) - Body ground	Always	10 kΩ or higher
   z20-3 (BSV) - E-2 (BSV)	Always	Below 1 Ω
   z20-3 (BSV) or E-2 (BSV) - Body ground	Always	10 kΩ or higher
   z20-6 (BSG) - E-4 (BSG)	Always	Below 1 Ω
   z20-6 (BSG) or E-4 (BSG) - Body ground	Always	10 kΩ or higher
   z20-5 (BST) - E-1 (BST)	Always	Below 1 Ω
   z20-5 (BST) or E-1 (BST) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 3: Identifying A58 Front Active Stabilizer Control ECU Connector Terminals

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1. Disconnect the A58 front active stabilizer control ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 4: Identifying y1 Rear Active Stabilizer Control ECU Connector Terminals

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1. Disconnect the y1 rear active stabilizer control ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 5: Identifying A23 Power Steering ECU Connector Terminal

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1. Disconnect the A23 power steering ECU connector.
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-)	Power switch off	54 to 69 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 6: Identifying A40 Steering Control ECU Connector Terminal

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1. Disconnect the A40 steering control ECU connector.
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-)	Power switch off	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 C1916 is output	A
   DTC is not output	B

A → CHECK INTERMITTENT PROBLEMS 

B → See step   8