B1392: Memory Door Lock Relay Coil Circuit Failure

DTC B1392: MEMORY DOOR LOCK RELAY COIL CIRCUIT FAILURE

B1392-1 CHECK FOR SHORT TO GROUND

Remove memory lock relay from fuse junction panel. Using an ohmmeter connected to ground, measure resistance at memory lock relay Pin 85, Circuit 116 (R/BK).

Is resistance less than 10K ohms?

YES GO to B1392-2.

NO GO to B1392-3.

B1392-2 CHECK CIRCUIT 116 (R/BK) FOR SHORT TO GROUND

Disconnect generic electronic module (GEM) connector C1.

Using an ohmmeter connected to ground, measure resistance at memory lock relay Pin 85, Circuit 116 (R/BK).

Is resistance less than 5 ohms?

YES SERVICE circuit 116 (R/BL) for short to ground. RESTORE vehicle. RETEST system.

NO REPLACE GEM. RESTORE vehicle. RETEST system.

B1392-3 CHECK SUPPLY TO MEMORY LOCK RELAY COIL

Remove memory lock relay from fuse junction panel.

Using a voltmeter, measure voltage at memory lock relay pin 86.

Is voltage B+?

YES GO to B1392-4.

NO SERVICE Circuit 116 (R/BK) for short to ground. RESTORE vehicle. RETEST system.

B1392-4 CHECK MEMORY LOCK RELAY FOR OPEN

Using an ohmmeter, measure resistance between memory lock relay Terminals 85 and 86.

Is resistance less than 10K ohms?

YES GO to B1392-5.

NO REPLACE memory lock relay. RESTORE vehicle. RETEST system.

B1392-5 CHECK CIRCUIT 116 (R/BK) FOR OPEN

Using an ohmmeter, measure resistance of Circuit 116 (R/BK) between memory lock relay Pin 85 and GEM connector Pin C1-4.

Is resistance 5 ohms or less?

YES REPLACE generic electronic module. RESTORE vehicle. RETEST system.

NO SERVICE Circuit 116 (R/BK) for open. RESTORE vehicle. RETEST system.