Engine Control Module: Service and Repair

ECM:

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

2. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY
a. Remove the instrument panel.

3. REMOVE NO. 3 HEATER TO REGISTER DUCT
4. REMOVE ECM

a. Disconnect the 4 ECM connectors.
b. Disconnect the 4 hybrid vehicle control ECU connectors.

c. Remove the 2 nuts and bolt, and ECM with bracket.

d. Remove the 2 nuts and ECM.

e. Remove the 6 screws and 3 No. 1 ECM brackets.

f. Remove the 4 screws and 2 No. 2 ECM brackets.

g. Remove the 2 screws and No. 3 ECM bracket.

INSTALLATION

1. INSTALL ECM

a. Install the No. 3 ECM bracket with the 2 screws.

b. Install the 2 No. 2 ECM brackets with the 4 screws.

c. Install the 3 No. 1 ECM brackets with the 6 screws.

d. Install the ECM with the 2 nuts.

Torque: 3.0 N.m (31 kgf.cm, 27 in.lbf)

e. Install the ECM with bracket with the 2 nuts and bolt.

Torque: 3.0 N.m (31 kgf.cm, 27 in.lbf)

f. Connect the 4 hybrid vehicle control ECU connectors.
g. Connect the 4 ECM connectors.

2. INSTALL NO. 3 HEATER TO REGISTER DUCT
3. INSTALL INSTRUMENT PANEL SUB-ASSEMBLY
a. Install the instrument panel.

4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
5. PERFORM INITIALIZATION
a. Perform initialization.

NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.