( TL19E00J00061545171FCAT00 )

Parking and Back-up Sensor Control Unit Input Test

1. Remove the driver's dashboard undercover, then remove the dashboard lower cover.

1. Remove the parking and back-up sensor control unit (A).

1. Disconnect the 16P connector (B) from the parking and back-up sensor control unit.

1. Inspect the connector and socket terminals to be sure they are all making good contact.
   - If the terminal 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 connectors still disconnected, make these input tests at the connectors.
   - If any test indicates a problem, find and correct the cause, then recheck the system.
   - If all the input tests prove OK, go to Step 6 .

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---
   2 | RED | Under all conditions | Check for continuity between the No. 2 terminal and left front corner parking sensor No. 6 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 2 terminal and body ground: There should be no continuity. | A short to ground in the wire
   3 | GRN | Under all conditions | Check for continuity between the No. 3 terminal and left front corner parking sensor No. 4 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 3 terminal and body ground: There should be no continuity. | A short to ground in the wire
   4 | BLU | Under all conditions | Check for continuity between the No. 4 terminal and left front corner parking sensor No. 2 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 4 terminal and body ground: There should be no continuity. | A short to ground in the wire
   10 | LT BLU | Under all conditions | Check for continuity between the No. 10 terminal and left rear corner parking sensor No. 6 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 10 terminal and body ground: There should be no continuity. | A short to ground in the wire
   11 | YEL | Under all conditions | Check for continuity between the No. 11 terminal and left rear corner parking sensor No. 4 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 11 terminal and body ground: There should be no continuity. | A short to ground in the wire
   12 | GRN | Under all conditions | Check for continuity between the No. 12 terminal and left rear corner parking sensor No. 2 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 12 terminal and body ground: There should be no continuity. | A short to ground in the wire
   6 | BLU | Under all conditions | Check for continuity between the No. 6 terminal and driver's MICU connector P (20P) No. 5 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 6 terminal and body ground: There should be no continuity. | A short to ground in the wire
   7 | PNK | Under all conditions | Check for continuity between the No. 7 terminal and driver's MICU connector P (20P) No. 6 terminal: There should be continuity. | An open in the wire
   Check for continuity between the No. 7 terminal and body ground: There should be no continuity. | A short to ground in the wire

1. Reconnect the 16P connector to the parking and back-up sensor control unit, and 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, control unit must be faulty; replace it.

   Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained
   --- | --- | --- | --- | ---

   16

   BLK

   Ignition switch ON (II)

   Check for continuity to ground: There should be continuity.

   - An open in the wire
   - Poor ground (G503)

   1

   BRN

   Ignition switch ON (II)

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - Faulty MICU
   - An open in the wire

   8

   PNK

   Ignition switch ON (II) and parking and back-up sensor switch ON

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - Faulty switch
   - An open in the wire

   5

   ORN

   Ignition switch ON (II) and parking and back-up sensor switch ON

   Measure the voltage to ground: There should be battery voltage.

   - Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box
   - Faulty switch
   - Blown indicator bulb
   - An open in the wire