E 320 Coupe (124.052) L6-3.2L (104.992) (1994)
Engine Control Module: Service and Repair
If an HFM-SFI control module is the suspect problem or defective, it should be replaced with a known good or new unit. After replacement, the control
module's "self-adaptive" feature must be reset to erase any "learned" values.
SPECIAL TOOLS
The following special tools are required to perform the reset procedure:
Impulse Counter Scan Tool
a. Impulse counter scan tool# 124 589 19 21 00 (or equivalent).
Impulse Counter Adapter
b. Impulse counter adapter# 140 589 14 63 00 (or equivalent).
TEST CONDITIONS
a. Coolant temperature approx. 80° C (160° F).
b. A/C OFF.
c. Gear selector in "P" position.
Test Equipment Hook-up
TEST EQUIPMENT HOOK-UP