Keyless Receiver Unit Input Test - Without Activation Indicator

1.Remove the heater control panel or climate control unit.

2.Disconnect the 5P connector (A) from the keyless receiver unit (B).

 

3.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 are OK, go to 5.

4.Reconnect the connector, 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, go to 5.

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 
BLK Under all conditions Check for continuity to ground:
There should be continuity. 
  • Poor ground (G502)
  • An open in the wire
 
YEL Ignition switch ON (II) Check for voltage to ground:
There should be battery voltage. 
  • Blown No. 10 (7.5A) fuse in the under-dash fuse/relay box
  • An open in the wire
 
Ignition switch OFF Check for voltage to ground:
There should be no voltage. 
  • Short to power on No. 10 (7.5A) fuse circuit
 
WHT/RED Under all conditions Check for voltage to ground:
There should be battery voltage. 
  • Blown No. 9 (10A) fuse in the under-hood fuse/relay box
  • An open in the wire
 

5.Disconnect the connector, and make this input test at the connector.
  • If the test indicates a problem, find and correct the cause, then recheck the system.
  • If the input test prove OK, replace the keyless receiver unit.

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 
BLU/ORN Ignition switch OFF, under-dash fuse/relay box connector K (17P) disconnected Check for continuity between the No. 2 terminal and the No. 2 terminal of the under-dash fuse/relay box connector K (17P).
There should be continuity. 
  • An open in the wire
  • A short to ground in the wire
 
Check for continuity between the No. 2 terminal and body ground:
There should be no continuity.