G 30 Van V8-393 6.5L DSL VIN P (1995)
service PCM. Refer to TDC Offset Program Procedure. See: TDC Offset Program Procedure
REMOVE OR DISCONNECT (PCM or PROM)
1. Negative battery cable.
2. Connectors from PCM.
3. PCM mounting hardware.
4. PCM from passenger compartment.
5. PCM access cover.
6. PROM.
CAUTION: Replacement Powertrain Control Module (PCM) is supplied without a PROM, so care should be used when removing it from the
defective PCM because it will be reused in the new PCM.
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Using two fingers, grasp the PROM at both ends and lift it up out of the socket. Do not remove the cover of the PROM. Use of unapproved
PROM removal methods may cause damage to the PROM or socket.
INSPECT
For alignment notches of the PROM and carefully set it aside.
REMOVE OR DISCONNECT (PCM ONLY)
1. New PCM from its packaging and check the service number to make sure it is the same as the defective PCM.
2. Access cover.
INSTALL OR CONNECT
1. PROM in PROM socket.
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Gently press down on PROM.
2. Access cover on PCM.
3. PCM in passenger compartment.
4. Connectors to PCM.
FUNCTIONAL CHECK
1. Turn ignition "ON."
2. Enter diagnostics mode.
A. DTC 12 should flash three times (if no other DTCs are present). This indicates the PROM is installed properly, and the PCM is functioning.
B. If DTC 51 occurs, or if the Malfunction Indicator Lamp (MIL) (Service Engine Soon) is "ON" constantly with no DTC(s), the PROM is not
fully seated or is defective.
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If not fully seated, press firmly on the ends of the PROM.
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If it is necessary to remove the PROM, follow the previous removal instructions.