DTC 51: Side Auto Step LH Stowing Timeout; DTC 52: Side Auto Step LH Deploying Timeout; DTC 53: Side Auto Step RH Stowing Timeout; DTC 54: Side Auto Step RH Deploying Timeout; DTC 55: Motor LH Spining Freely; DTC 56: Motor RH Spining Freely [08/2015 - ]: Procedure

1. Confirm the operation of the automatic running board and proceed to the steps indicated below.

   Result

   Result	Proceed to
   The side auto step motor turns over at high speed for 4 seconds and then stops. (The automatic running board does note move)	A
   The side auto step motor turns over at high speed for 4 seconds and then stops. (The automatic running board is stowed or deployed)	B
   The side auto step motor turns over at low speed for 4 seconds and then stops. (The automatic running board stops partway during stowing or deploying operation)	C

Result: 

B 

REPLACE SIDE AUTO STEP MOTOR ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

C 

See step  3

Result: 

A 

See step  2

1. Check that the links of the power lift step assembly are properly installed.
2. Check that the links of the power lift step assembly are not damaged.

   OK

   Links of the power lift step assembly are properly installed.

   Links of the power lift step assembly are not damaged.

Result: 

OK 

REPLACE SIDE AUTO STEP MOTOR ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPLACE POWER LIFT STEP ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

1. Check that the links of the power lift step assembly are properly installed.
2. Check that the links of the power lift step assembly are not damaged.
3. Check that there is no dirt or foreign matter jamming the power lift step assembly links.

   HINT: 

   • In cold times, snow or ice may jam the power lift step assembly links and prevent them from moving smoothly.
   • Clean any dirt and foreign matter jamming the moving link sections of the power lift step assembly if necessary.

   OK

   Links of the power lift step assembly are properly installed.

   Links of the power lift step assembly are not damaged.

   There is no dirt or foreign matter jamming the moving sections of the power lift step assembly links.

Result: 

OK 

REPLACE SIDE AUTO STEP MOTOR ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPLACE POWER LIFT STEP ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )