RAM 2500 Truck 2WD V10-8.0L VIN W (2003)
Alarm Module: Service and Repair
PCM (SBEC) and the Sentry Key Immobilizer Module
NOTE: 1. There are two procedures for transfering the secret key to the SKIM:
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When ONLY the SKIM module is replaced, the secret key is transfered from the PCM to the SKIM. The ORGINAL KEYS may then
be programmed to the SKIM.
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When ONLY the PCM is replaced, then the secret key is transfered from the SKIM to the PCM. The ORGINAL KEYS may be used.
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When BOTH the SKIM and the PCM are replaced the secret key is transferred from the SKIM to the PCM, and NEW KEYS must be
programmed.
2. Before replacing the Powertrain Control Module (PCM) for a failed driver, control circuit, or ground circuit, be sure to check the related
component/circuit integrity for failures not detected due to a double fault in the circuit. Most PCM driver/control circuit failures are caused
by internal component failures (i.e. relay and solenoids) and shorted circuits (i.e. pull-ups, drivers and switched circuits). These failures are
difficult to detect when a double fault has occurred and only one Diagnostic Trouble Code (DTC) has set.
When a PCM (SBEC) and the Sentry Key Immobilizer Module (SKIM) are replaced at the same time perform the following steps in order:
1. Program the new PCM (SBEC).
2. Program the new SKIM.
3. Replace all ignition keys and program them to the new SKIM.
