Test B: No Communication With Rear Electronics Module (Rem)
NOTE:
Cycle ignition switch from LOCK to RUN position to enable Switched System Power (SSP) feature.
- Turn ignition switch to LOCK position. Disconnect REM 20-pin harness connector C420D. Disconnect REM 26-pin harness connector C420C. Turn ignition switch to RUN position. Measure voltage between ground and REM harness connector C420D terminal No. 3 (Orange/Black wire). See Fig 1 . If more than 10 volts exists, go to next step. If 10 volts or less exists, repair open in Orange/Black wire. See WIRING DIAGRAMS .
- Turn ignition switch to LOCK position. Disconnect REM 22-pin harness connector C420B. Measure resistance between ground and REM harness connector terminals as specified. See REM TERMINAL IDENTIFICATION
table. See Fig 2
and Fig 3
. If resistances are less than 5 ohms, see
MODULE COMMUNICATIONS NETWORK - LS article to diagnose network fault. If any resistance is 5 ohms or more, repair open or high resistance in appropriate wire. See WIRING DIAGRAMS
.REM TERMINAL IDENTIFICATION
Connector Terminal No. (Wire Color) C420B 12 (Black/Orange) C420C 13 (Orange/Black) C420C 12 (Black/Orange) C420C 11 (Black/Orange) C420C 26 (Black/Orange) C420C 25 (Black/Orange)