1994 PCED OBDI-A | SECTION 18A: Diesel Diagnosis — 7.3L DI Engine |
| 3 Digit | Description | Pinpoint Test Step Go to Direction | ||
|---|---|---|---|---|
| KOEO | KOER | Continuous | ||
| 111 | System Pass | Pass | Pass | Pass |
| 116 | EOT Out of KOER Self-Test Limits | — | Y1 | — |
| 117 | EOT Circuit Low Input | Y7 | — | Y10 |
| 118 | EOT Circuit High Input | Y5 | — | Y10 |
| 122 | Accelerator Pedal Position Circuit Low Input | E4 | — | E4 |
| 123 | Accelerator Pedal Position Circuit High Input | E1 | — | E1 |
| 124 | Idle Validation Switch Fault | — | AA1 | — |
| 125 | AP/IVS Disagree | — | — | AA1 |
| 126 | MAP Sensor Frequency Out of Range | — | — | D1 |
| 127 | MAP Signal Inactive | D3 | D3 | — |
| 128 | MAP Sensor Frequency In-Range Failure | — | — | D5 |
| 145 | Exhaust Back Pressure Circuit Low Input | H2 | — | H2 |
| 146 | Exhaust Back Pressure Circuit High Low | H5 | — | H5 |
| 147 | Excessive Exhaust Back Pressure | — | — | H1 |
| 151 | IAT Circuit Low Input | C3 | — | C5 |
| 152 | IAT Circuit High Input | C1 | — | C5 |
| 153 | ICP Circuit Low Input | Z1 | — | Z1 |
| 154 | ICP Circuit High Input | Z4 | — | Z4 |
| 155 | Excessive ICP | — | — | X5 |
| 511 | PCM ROM Failure | AG1 | — | — |
| 512 | KAM Test Failure | AH1 | — | — |
| 514 | EBP Control Solenoid Circuit Failure | M1 | — | — |
| 515 | Glow Plug Relay Output Circuit Failure | S1 | — | — |
| 516 | Glow Plug Lamp Output Circuit Failure | R1 | — | — |
| 517 | B+ High Voltage | — | — | A1 |
| 518 | B+ Low Voltage | — | — | A1 |
| 523 | PCM Inactive Background Fault | AJ | — | — |
| 528 | Clutch Pedal Position Switch Failure | — | N1 | N1 |
| 536 | Brake Switch Input Malfunction (BOO) | — | K1 | K1 |
| 546 | IPR Output Circuit Check | X1 | — | — |
| 547 | OCC Signal High | AE1 | — | — |
| 548 | OCC Signal Low | AD1 | — | — |
| 549 | IDM Relay Coil Circuit Open | W1 | — | — |
| 816 | CMP Counter Error | — | — | G1 |
| 817 | CMP Signal Noise | — | — | G1 |
| 818 | Inactive CMP | — | — | G1 |
| 819 | ICP Higher/Lower Than Expected | — | — | Z6 |
| 827 | BARO Circuit Low Input | AC1 | — | AC1 |
| No Code | No Codes Retrieved | AF1 | — | — |
| 828 | BARO Circuit High Input | AC4 | — | AC4 |
| 831 | Speed Control ON Not Pressed — KOER | — | F1 | — |
| 832 | Speed Control OFF Not Pressed — KOER | — | F1 | — |
| 833 | Speed Control RESUME Not Pressed — KOER | — | F1 | — |
| 834 | Speed Control SET Not Pressed — KOER | — | F1 | — |
| 835 | Speed Control COAST Not Pressed — KOER | — | F1 | — |
| 841 | ICP Not Controllable — KOER | — | X6 | X6 |
| 842 | Exhaust Back Pressure Not Controllable — KOER | — | M5 | — |
| 843 | Vehicle Moved During KOER Self-Test | — | Repeat Test | — |
| 844 | Invalid Cylinder Test Due To Pedal Movement | — | Repeat Test | — |
| 845 | IVPWR Too Low For Cylinder Contribution Test | — | A1 | — |
| 846 | Invalid KOER/CCT — ICP Fault Exists | Perform KOEO Test | — | — |
| 863 | Parking Brake Switch Circuit Failure | — | Q1 | — |
| 864 | Brake Pressure Applied Circuit Failure | — | P1 | — |
| 911 | IDM — Injector System Pass | Pass | Pass | Pass |
| 915 | Cylinder Identification High | — | V1 | V1 |
| 916 | Cylinder Identification Low | — | V1 | V1 |
| 921 | Low Side Short To Ground — Cylinder 1 (A) | AB1 | — | AB1 |
| 922 | Low Side Short To Ground — Cylinder 2 (B) | AB1 | — | AB1 |
| 923 | Low Side Short To Ground — Cylinder 3 (D) | AB1 | — | AB1 |
| 924 | Low Side Short To Ground — Cylinder 4 (E) | AB1 | — | AB1 |
| 925 | Low Side Short To Ground — Cylinder 5 (F) | AB1 | — | AB1 |
| 926 | Low Side Short To Ground — Cylinder 6 (G) | AB1 | — | AB1 |
| 927 | Low Side Short To Ground — Cylinder 7 (C) | AB1 | — | AB1 |
| 928 | Low Side Short To Ground — Cylinder 8 (H) | AB1 | — | AB1 |
| 931 | Low Side Short To B+ — Cylinder 1 (A) | AB5 | — | AB5 |
| 932 | Low Side Short To B+ — Cylinder 2 (B) | AB5 | — | AB5 |
| 933 | Low Side Short To B+ — Cylinder 3 (D) | AB5 | — | AB5 |
| 934 | Low Side Short To B+ — Cylinder 4 (E) | AB5 | — | AB5 |
| 935 | Low Side Short To B+ — Cylinder 5 (F) | AB5 | — | AB5 |
| 936 | Low Side Short To B+ — Cylinder 6 (G) | AB5 | — | AB5 |
| 937 | Low Side Short To B+ — Cylinder 7 (C) | AB5 | — | AB5 |
| 938 | Low Side Short To B+ — Cylinder 8 (H) | AB5 | — | AB5 |
| 941 | Cylinder 1 Non-Contributing | — | AB7 | — |
| 942 | Cylinder 2 Non-Contributing | — | AB7 | — |
| 943 | Cylinder 3 Non-Contributing | — | AB7 | — |
| 944 | Cylinder 4 Non-Contributing | — | AB7 | — |
| 945 | Cylinder 5 Non-Contributing | — | AB7 | — |
| 946 | Cylinder 6 Non-Contributing | — | AB7 | — |
| 947 | Cylinder 7 Non-Contributing | — | AB7 | — |
| 948 | Cylinder 8 Non-Contributing | — | AB7 | — |
| 955 | CID Output Circuit Failure | U1 | — | — |
| 956 | FDCS Output Circuit Check Fault | T1 | — | — |
| 961 | High To Low Side Short — Cylinder 1 (A) | AB9 | — | AB9 |
| 962 | High To Low Side Short — Cylinder 2 (B) | AB9 | — | AB9 |
| 963 | High To Low Side Short — Cylinder 3 (D) | AB9 | — | AB9 |
| 964 | High To Low Side Short — Cylinder 4 (E) | AB9 | — | AB9 |
| 965 | High To Low Side Short — Cylinder 5 (F) | AB9 | — | AB9 |
| 966 | High To Low Side Short — Cylinder 6 (G) | AB9 | — | AB9 |
| 967 | High To Low Side Short — Cylinder 7 (C) | AB9 | — | AB9 |
| 968 | High To Low Side Short — Cylinder 8 (H) | AB9 | — | AB9 |
| 971 | High To Low Side Open — Cylinder 1 (A) | AB13 | — | AB13 |
| 972 | High To Low Side Open — Cylinder 2 (B) | AB13 | — | AB13 |
| 973 | High To Low Side Open — Cylinder 3 (D) | AB13 | — | AB13 |
| 974 | High To Low Side Open — Cylinder 4 (E) | AB13 | — | AB13 |
| 975 | High To Low Side Open — Cylinder 5 (F) | AB13 | — | AB13 |
| 976 | High To Low Side Open — Cylinder 6 (G) | AB13 | — | AB13 |
| 977 | High To Low Side Open — Cylinder 7 (C) | AB13 | — | AB13 |
| 978 | High To Low Side Open — Cylinder 8 (H) | AB13 | — | AB13 |
| 983 | PCM — IDM Diagnostic Communications Error | U1 | — | — |
| 988 | IDM Failure | U1, W1 | — | U1, W1 |
| 991 | High Side Short To GND Or B+ Right Bank | AB17 | — | AB17 |
| 992 | High Side Short To GND Or B+ Left Bank | AB17 | — | AB17 |
| 993 | High Side Open Right Bank | AB21 | — | AB21 |
| 994 | High Side Open Left Bank | AB21 | — | AB21 |
| 995 | Multiple Faults, Right Bank With Low Side Shorted | AB25 | — | AB25 |
| 996 | Multiple Faults, Left Bank With Low Side Shorted | AB25 | — | AB25 |
| 997 | High Side Switches Shorted Together | AB26 | — | AB26 |
Note: Speed Control (DTCs) will be set if the vehicle is not equipped with speed control. This is a normal condition. On these vehicles ignore the following DTCs 831-832-834-835.