STEP/SEQUENCE RESULT WHAT TO DO NEXT TM 9-2320-363-20-1 Section 4 TROUBLESHOOTING CHARTS E. FLASH CODE: 22 (Cont'd) J1587 CODE: P91 4 - ELECTRONIC FOOT PEDAL ASM (EFPA) CIRCUIT FAILED HIGH (VOLTAGE LOW) ALSO CALLED THROTTLE POSITION SENSOR (TPS) 22-8 Check for Signal Open Install a jumper wire between Less than Go to 22-9. sockets A and B of the TPS or equal to 5 ohms. harness connector. Read resistance between sockets Greater than Signal line (ckt#417) is open. D2 and C3 on the vehicle harness 5 ohms or open. and/or signal return (ckt#952) connector. is open. Repair open. If no open was found, check ECM terminals A3, D2, C3 and TPS pins. Then go to 22-30. 22-9 Check ECM Connectors Check terminals at the ECM Terminals and Replace ECM. Then go to vehicle harness connector (both connectors are okay. 22-30. the ECM and harness side) for damage; bent, corroded, and Problem found. Repair terminals/connectors. unseated pins or sockets. Then go to 22-30. 22-10 Check for Short Turn ignition off. Less than or The vehicle +5 Volt line Disconnect the vehicle harness equal to 10,000 ohms. (ckt#916) is shorted to the return connector at the ECM. line (ckt#952). Repair short. Read resistance between sockets Then go to 22-30. A and C on the TPS harness connector.   Greater than Go to 22-11. 10,000 ohms or open. 22-11 Check for Open +5 Volt Line Install a jumper wire between Less than or Go to 22-9. sockets A and C of the TPS equal to 5 ohms. harness connector. Read resistance between sockets Greater than The vehicle +5 Volt line (ckt A3 and C3 on the vehicle harness 5 ohms or open. #916) is open. Repair open. connector. Then go to 22-30. Change 3  3-345.241