2.
Disconnect the ECM connector (A).
TEST ECM GROUND CIRCUIT: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repair it.
Specification: below 1Ω
TEST ECM CONNECTOR: Disconnect the ECM connector and visually check the ground terminals on ECM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
If problem is not found in Step 1 and 2, the ECM could be faulty. If so, replace the ECM with a new one, and then check the vehicle again. If the vehicle operates normally then the problem was likely with the ECM.
RE-TEST THE ORIGINAL ECM : Install the original ECM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original ECM with a new one. If problem does not occur, this is intermittent problem (Refer to Intermittent Problem Procedure in Basic Inspection Procedure)
When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below.
[In the case of installing used ECM]
Perform "ECM neutralization mode" procedure with GDS. (Refer to "Immobilizer" in BE group)
Insert the key and turn it to the IGN ON and OFF position.
Then the ECM key register process is completed automatically.
[In the case of installing new ECM]– Insert the key and turn it to the IGN ON and OFF position.
Then the ECM key register process is completed automatically.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
Disconnect the ECM connector (A).
Remove the bracket installation bolts (A) and the nut (B).
Remove the installation nuts (A), and then remove the ECM from the bracket.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
Disconnect the ECM connector (A).
Remove the bracket installation bolts (A) and the nut (B).
Remove the installation screw (A), and then remove the ECM from the bracket.
When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below.
[In the case of installing used ECM]
Perform "ECM neutralization mode" procedure with GDS. (Refer to "Immobilizer" in BE group)
Insert the key and turn it to the IGN ON and OFF position.
Then the ECM key register process is completed automatically.
[In the case of installing new ECM]– Insert the key and turn it to the IGN ON and OFF position.
Then the ECM key register process is completed automatically.
Install in the reverse order of removal.
ECM installation nut [A/T]:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
ECM installation screw [M/T]:
0.9 ~ 0.95 N.m (0.092 ~ 0.096 kgf.m, 0.6 ~ 0.7 lb-ft)
ECM bracket installation bolt:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
ECM bracket installation nut:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
