Disconnect the negative (-) battery terminal.

Remove the ICM relay box.

Check for continuity between the terminals.

There should be continuity between the No.15 terminal and No.6(or 16) terminals in the ICM-B when power and ground are connected to the No.15 terminal and No.17 terminal in the ICM-B.

There should be no continuity between the No.15 terminal and No.6(or 16) terminal in the I/P-D when power is disconnected.

Disconnect the negative (-) battery terminal.

Remove the ICM relay box.

Check for continuity between the terminals.

There should be continuity between the No.15 terminal and No.4(or 14) terminal in the ICM-B when power and ground are connected to the No.12 terminal and No.15 terminal in the ICM-B.

There should be no continuity between the No.15 terminal and No.4(or 14) terminal in the ICM-B when power is disconnected.

Disconnect the negative (-) battery terminal.

Remove the passenger compartment junction box.

Check for continuity between the terminals.

There should be continuity between the No.3 terminal in the I/P-H and the No.2 terminal in the I/P-D when power and ground are connected to the No.3 terminal in the I/P-H and the No.28 terminal in the I/P-F.

There should be no continuity between the No.3 terminal in the I/P-H and the No.2 terminal in the I/P-D when power and ground are connected to the No.3 terminal in the I/P-H and the No.28 terminal in the I/P-F.