Diagnostics Item 12

DIAGNOSTIC ITEM 12: Diagnose when the scan tool cannot receive the data sent by convertible top control module. [ECLIPSE SPYDER]

CAUTION:
When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted water pipe. If you fail to do so, a component connected to the CAN bus line may be damaged.

FUNCTION

The diagnostic result demonstrates that "the scan tool cannot receive the sent data from convertible top control module " when the scan tool MB991958 checks the periodically sent data from each ECU and cannot receive convertible top control module data only.

TROUBLE JUDGMENT CONDITIONS

Scan tool MB991958 judges the trouble when the periodically sent data from convertible top control module cannot be received and sent.

TROUBLESHOOTING HINTS

- The wiring harness may be defective [open circuit between convertible top control module and joint connector (3)]
- The connector may be defective [poor connection of joint connector (3) or convertible top control module connector]
- Power supply circuit malfunction of convertible top control module
- The convertible top control module may be defective (internal open circuit)
- The convertible top control module may be defective

DIAGNOSIS

Diagnose the convertible top control system. Inspection Procedure 1.