No Response From Sentry Key Immobilizer Module
- Turn ignition on. Using scan tool, select BODY COMPUTER, SYSTEM TEST then PCM MONITOR. If scan tool displays PCM ACTIVE ON THE BUS, go to next step. If scan tool does not display PCM ACTIVE ON THE BUS, go to NO RESPONSE FROM POWERTRAIN CONTROL MODULE
.
- Turn ignition off. Disconnect Sentry Key Immobilizer Module (SKIM) connector. See Figure
. Using DVOM, measure resistance between ground and Black/Light Green wires at SKIM connector terminals No. 3 and 4. See Fig 1
. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or greater, repair open in Black/Light Green wire(s). Perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
- Using a DVOM, measure voltage between ground and SKIM connector terminal No. 6 (Dark Blue/Gray wire). If voltage is greater than 10 volts, go to next step. If voltage is 10 volts or less, repair open in Dark Blue/Gray wire. Perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
- Turn ignition on. Using a DVOM, measure voltage between ground and SKIM connector terminal No. 4 (White/Black wire). If voltage is greater than 10 volts, go to next step. If voltage is 10 volts or less, repair open in White/Black wire. Perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
- Connect a jumper wire between SKIM connector terminals No. 2 (White/Black wire) and No. 3 (Black/Light Green wire). Using scan tool, perform CCD BUS test. If scan tool displays BUS SHORT TO GROUND, go to next step. If scan tool does not display BUS SHORT TO GROUND, repair open in White/Black wire for CCD BUS (-) circuit. Perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
- Move jumper wire between SKIM connector terminals No. 1 (Violet/Brown wire) and No. 3 (Black/Light Green wire). Using scan tool, perform CCD BUS test. If scan tool displays BUS SHORT TO GROUND, replace SKIM. See SENTRY KEY IMMOBILIZER MODULE
under REMOVAL & INSTALLATION. Perform BODY VERIFICATION TEST
under VERIFICATION TESTS. Using scan tool, reprogram keys. If scan tool does not display BUS SHORT TO GROUND, repair open in Violet/Brown wire. Perform BODY VERIFICATION TEST
under VERIFICATION TESTS.
Courtesy of CHRYSLER CORP.