Comanche 2WD V6-173 2.8L VIN W 2-bbl (1986)
The diagnostic codes will flash in numeric order (lowest number code first). The code series will repeat as long as the test terminals are grounded.
REPLACEMENT PROCEDURE
1.
Disconnect the positive battery cable.
Fig. 2 - ECU
2.
Remove the ECU from the vehicle. The ECU is located under the instrument panel to the right of the steering column.
3.
Remove the metal access cover (A) from the ECU. This is accomplished by removing the two retaining screws (B) (Fig. 2).
4.
Remove the PROM from the ECU circuit board.
CAUTION: Be careful not to bend the pins while pulling the PROM out of the ECU.
5.
Install the replacement PROM (C), P/N 8953 004 807, (Fig. 2).
NOTE:
The replacement PROM is contained in a plastic holder. This plastic holder is keyed to prevent reverse installation of the PROM.
6.
Properly place the PROM (C) on the circuit board.
CAUTION: Be sure to align the key for the correct installation.
7.
Press down on the PROM to fully insert it into the circuit board.
8.
Install the access cover (A) and retaining screws (B).
9.
Install the ECU in the vehicle.
10.
Connect the positive battery cable.
