Clearing Trouble Codes

CAUTION: Ensure ignition is off when disconnecting or reconnecting power supply to ECM.

After repairs are performed, clear ECM memory of all stored trouble codes. To clear memory, turn ignition off.
On Impulse, remove ECM fuse (30A) from fuse block, located in left front corner of engine compartment, for at least 30 seconds. Replace fuse.
On Trooper, disconnect Green fusible link at fusible link box located in right front corner of engine compartment, for at least 30 seconds.
NOTE: The Green fusible link is connected to a White wire.
On all models, trouble codes can also be cleared by disconnecting vehicle battery. However, other memory functions (clock, radio, etc.), will require resetting.

ECM LOCATIONS

Model

Location

Impulse

⁽¹⁾ Behind Left Side Of Instrument Panel

⁽¹⁾	DO NOT confuse transaxle Electronic Control Unit (ECU), located on left side of instrument panel, with ECM located behind air duct. The ECM has a 24-pin and 32-pin connector. Transaxle ECU has a 16-pin and 20-pin connector.