Possible Causes

SJB fuse 11 (10A)
Circuit (GY/R) open
Circuit (B/W) open
Circuit (W/L) open (HS-CAN +)
Circuit (W) open (HS-CAN -)
SJB

CAUTION:

Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.

SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL - PINPOINT TEST REFERENCE

PINPOINT TEST 1		SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL
STEP	INSPECTION		ACTION
1	CHECK SJB FUSE 11 FOR AN OPEN Disconnect: SJB fuse 11 (10A). Inspect the fuse for an open. Is the fuse open?	Yes	GO to step 4.
1		No	Go to next step.
2	CHECK CIRCUIT (B/W) FOR AN OPEN Key in OFF position. Disconnect: SJB connector J-2280c. Measure the resistance between the SJB connector J-2280c pin 1, circuit (B/W), harness side and ground. Is the resistance less than 5 ohms?	Yes	Go to next step.
2		No	REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
3	CHECK THE HS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE SJB FOR AN OPEN Disconnect: SJB connector J-2280d. Measure the resistance between the SJB J-2280d connector pin 20, circuit (W/L), harness side and the DLC connector D-01 pin 6, circuit (W/L), harness side. Measure the resistance between the SJB connector J-2280d pin 21, circuit (W), harness side and the DLC connector D-01 pin 14, circuit (W), harness side. Are the resistances less than 5 ohms?	Yes	Go to next step.
3		No	REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
4	CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	INSTALL a new SJB. See Smart Junction Box (SJB) , . CLEAR the DTCs. REPEAT the network test with the scan tool.
4		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.