STEP/SEQUENCE RESULT WHAT TO DO NEXT TM 9-2320-363-20-1 Section 4 TROUBLESHOOTING CHARTS E. FLASH CODE: 41 J1587 CODE: S21 0 - TOO MANY SRS (MISSING TRS) 41-13 Check SRS Connectors Check connectors at the Connectors Replace Synchronous Reference Synchronous Reference Sensor are okay. Sensor.  Then go to 41-14. (both the harness side and the sensor side) for damage; bent, Problem found. Repair terminals/connectors. corroded or unseated pins or Then go to 41-30. sockets, or bad contacts. 41-14 Verify SRS/TRS Turn ignition off.   (No codes).   Repairs are complete. Reconnect all connectors Turn ignition on. Code 21/0 reappears (and   If the SRS was just replaced, go Clear codes. any other codes). to 41-15.  If the SRS was not Start and run engine until the replaced, go to 41-6. "Check Engine" light comes on or for 1 minute. Code(s) other Go to START-1, pg 3-345.41, Stop engine. than Code 21/0 received. to service other codes. Read inactive codes. 41-15 Check Cranking Voltage Turn ignition off. Engine won't start Go to 41-7. Connect 12 volt from a fully and/or Code 21/0 (and charged battery to the 5-pin power any other codes). connector. Connect other connectors. Engine starts Either battery is dead or voltage Turn ignition on. and no Code 21/0 equalizer needs to be replaced. Clear codes Repair, then go to 41-30 Start engine.  Run until "Check Engine" light appears or for 1 minute. Stop engine. Read active codes. Change 3  3-345.319