Back-Up Power Source Circuit

CONVERTIBLE: RETRACTABLE HARDTOP SYSTEM: Back-up Power Source Circuit
- Back-up Power Source Circuit

DESCRIPTION

Battery positive voltage is supplied to terminal CPUB of the sliding roof control ECU even when the ignition switch is OFF for use by the DTC memory.

WIRING DIAGRAM





INSEPCTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (MPX-B1)

(a) Remove the MPX-B1 fuse from the passenger junction block.

(b) Measure the resistance of the fuse.

Standard resistance:

Below 1 Ohms

NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK WIRE HARNESS (SLIDING ROOF CONTROL ECU - BATTERY)

(a) Disconnect the S19 ECU connector.





(b) Measure the voltage of the wire harness side connector.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE SLIDING ROOF CONTROL ECU