CHECK CONTROL MODULE.

1) Connect the disconnected connectors.

2) Disconnect the auto A/C control module connector.

3) Short the harness connector to chassis ground.

Connector & terminal

(i88) No. 33 — Chassis ground:

(i88) No. 12 — Chassis ground:

(i88) No. 29 — Chassis ground:

(i88) No. 30 — Chassis ground:

(i88) No. 5 — Chassis ground:

QUESTION

Does PTC heater become warm?

Yes No

Replace the auto A/C control module.

Replace the PTC heater.