Rain Sensor Input Test

NOTE: When replacing the rain sensor, always install the rain sensor first, then connect the battery.

1. Before testing the rain sensor, perform the multiplex integrated control system test mode A troubleshooting.

1. Remove the cover (A) from the rain sensor (B).

1. Disconnect the 5P connector (C) from the rain sensor.

1. Inspect the connector and socket terminals to be sure they are all making good contact.
   - if the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
   - if the terminals look OK, go to Step 5 .

1. With the connector still disconnected, make these input tests at the connector.
   - if any test indicates a problem, find and correct the cause, then recheck the system.
   - If all the input tests prove OK, replace the rain sensor.

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained
   --- | --- | --- | --- | ---
   2 | YEL/GRN | Ignition switch ON (II) | Check for voltage to ground: There should be battery voltage. |
   - Blown No. 20 (7.5 A) fuse in the under-dash fuse/relay box
   - An open in the wire
   3 | BLK | Under all conditions | Check for continuity ground: There should be continuity. |
   - Poor ground (G501 [G601])
   - An open in the wire
   5 | LT BLU | Under all conditions | Check for continuity between the under-dash fuse/relay box X connector terminal No. 18 and rain sensor 5P connector terminal No. 5: There should be continuity. |
   - An open in the wire

   [ ]: | RHD type