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Home >> Toyota >> 2010 >> 4 Runner 2WD L4-2.7L (2TR-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> Short to B+ in CAN Bus Line >> Part 2

Part 2





NETWORKING: CAN COMMUNICATION SYSTEM: Short to B+ in CAN Bus Line
- Short to B+ in CAN Bus Line - (Continued)

31. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (POWER STEERING ECU ASSEMBLY)

(a) Disconnect the F41 power steering ECU assembly connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER STEERING ECU ASSEMBLY (CANH, CANL)

OK -- REPLACE POWER STEERING ECU ASSEMBLY

32. CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.

NEXT -- Continue to next step.

33. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (YAW RATE SENSOR ASSEMBLY)

(a) Disconnect the F36 yaw rate sensor assembly connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR ASSEMBLY (CANH, CANL)

OK -- REPLACE YAW RATE SENSOR ASSEMBLY

34. CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.

NEXT -- Continue to next step.

35. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ECM)

(a) Disconnect the F50 ECM connector.





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

Standard Resistance:

















C -- REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL)

B -- REPLACE ECM

A -- REPLACE ECM

36. CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.

NEXT -- Continue to next step.

37. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

(a) Disconnect the G13 No. 4 junction connector connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)
OK -- Continue to next step.

38. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 4 JUNCTION CONNECTOR SIDE)

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





Standard Resistance:









NG -- CONNECT CONNECTOR
OK -- Continue to next step.

39. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 4 JUNCTION CONNECTOR - NAVIGATION RECEIVER)

(a) Disconnect the G14 No. 4 junction connector connector.





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

Standard Resistance:









NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR

40. CONNECT CONNECTOR

(a) Reconnect the G13 and G14 No. 4 junction connector connectors.

NEXT -- Continue to next step.

41. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NAVIGATION RECEIVER ASSEMBLY)

(a) Disconnect the G20 navigation receiver connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NAVIGATION RECEIVER ASSEMBLY (CANH, CANL)

OK -- REPLACE NAVIGATION RECEIVER ASSEMBLY

42. CONNECT CONNECTOR

*1: w/o Navigation System

*2: w/ Navigation System

(a) Reconnect the F60 No. 3*1 junction connector connector.

(b) Reconnect the G13 No. 4*2 junction connector connector.

NEXT -- Continue to next step.

43. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - NO. 3 OR NO. 4 JUNCTION CONNECTOR)

(a) Disconnect the F59 No. 2 junction connector connector.





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

Standard Resistance:













C -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

B -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)
A -- Continue to next step.

44. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - STABILIZER CONTROL ECU)

HINT
For vehicles without a kinetic dynamic suspension system, go to "Check for Short to B+ in CAN Bus Wire (No. 2 Junction Connector - Main Body ECU)".

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





Standard Resistance:









NG -- CONNECT CONNECTOR
OK -- Continue to next step.

45. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - MAIN BODY ECU)

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





Standard Resistance:









NG -- CONNECT CONNECTOR
OK -- Continue to next step.

46. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)

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





Standard Resistance:









NG -- CONNECT CONNECTOR
OK -- Continue to next step.

47. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 JUNCTION CONNECTOR - SPIRAL CABLE SUB-ASSEMBLY)

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





Standard Resistance:









NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 2 JUNCTION CONNECTOR

48. CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.

NEXT -- Continue to next step.

49. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (STABILIZER CONTROL ECU)

(a) Disconnect the F70 stabilizer control ECU connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BUS BRANCH WIRE CONNECTED TO STABILIZER CONTROL ECU (CANH, CANL)

OK -- REPLACE STABILIZER CONTROL ECU

50. CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.

NEXT -- Continue to next step.

51. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (MAIN BODY ECU)

(a) Disconnect the F9 main body ECU (multiplex network body ECU) connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MAIN BODY ECU (CANH, CANL)

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

52. CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.

NEXT -- Continue to next step.

53. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CENTER AIRBAG SENSOR ASSEMBLY)

(a) Disconnect the F33 center airbag sensor assembly connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CENTER AIRBAG SENSOR (CANH, CANL)

OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY

54. CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.

NEXT -- Continue to next step.

55. CHECK FOR SHORT TO B+ IN CAN BUS WIRE (SPIRAL CABLE SUB-ASSEMBLY)

(a) Disconnect the F19 spiral cable sub-assembly (steering angle sensor) connector.





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

Standard Resistance:









NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SPIRAL CABLE SUB-ASSEMBLY (CANH, CANL)

OK -- REPLACE SPIRAL CABLE SUB-ASSEMBLY

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