Typical Diagnostic Reference Values
NOTE:
An attempt is made to provide as much information as possible. Some vehicles may not display all input and output signals.
The Typical Diagnostic Reference Value Charts do not display fault parameter identifications (PIDs). These are PIDs which indicate a hard fault with the circuit. They display a value of FAULT or NO FAULT and are PIDs ending with the letter F.
Reference values may vary 20% depending on operating conditions, altitude, and other factors. The RPM values are axle and tire dependent.
Values are taken at an altitude of approximately 189 meters (620 ft) above sea level with the engine at normal operating temperature and accessories off.
For detailed transmission diagnostics, refer to OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION . Transmission signals may be referred to in either alpha or numeric form. For example, 1=A, 2=B, 3=C.
- Value is not useful under this condition.
- Value depends on fuel tank level. Typical operating range is 15% (empty) to 90% (full).
- Heated oxygen sensors (HO2S) should switch from rich to lean at least once every 3 seconds. HO2S voltage should toggle above and below 0.450 DCV and never be a negative value. Valid HO2S switching occurs only during closed loop fuel control operation.
- Downstream oxygen sensors stay close to a constant voltage when the catalyst monitor is off (positive value only). When the catalyst monitor is on, the HO2S switches from rich to lean above and below 0.450 DCV and should never be a negative value. For downstream oxygen sensors (12, 22) greater activity results when the catalyst monitor is active.
- The normal operation value is from -1.5 to 3.5 degrees.
| PID | Units Measured/PID | Component/PID Only | Measured/PID Values | |||
|---|---|---|---|---|---|---|
| KOEO | Hot Idle | 48KM/H (30 MPH) | 89 KM/H (55 MPH) | |||
| PCM AAT (Deg C) | DEG C (DEG F) | AAT Sensor | 19 (66.2) | 19 (66.2) | 19 (66.2) | 19 (66.2) |
| PCM AAT_V (V) | VOLTS | AAT Sensor | 1.54 | 1.36 | 2.34 | 2.47 |
| PCM AC_REQUEST | YES/NO | PID | NO | NO | NO | NO |
| PCM APP (%) | % | APP Sensor | 0 | 0 | 13 | 13 |
| PCM APP1 (V) | VOLTS | APP Sensor | 0.78 | 0.78 | 1.19 | 1.23 |
| PCM APP1_[APP_D] (%) | % | APP Sensor | 15 | 15 | 24 | 24 |
| PCM APP2 (V) | VOLTS | APP Sensor | 0.40 | 0.40 | 0.60 | 0.62 |
| PCM APP2_[APP_E] (%) | % | APP Sensor | 8 | 8 | 12 | 12 |
| PCM APP_MAXDIFF (Deg) | DEG | PID | 0 | 0 | 0 | 0 |
| PCM BARO (kPa) | kPa (PSI)/Hz | PID | 99 (14.36) | 100 (14.50) | 100 (14.50) | 99 (14.36) |
| PCM BARO_V (V) | VOLTS | PID | 3.91 | 3.91 | 3.91 | 3.91 |
| PCM BRKOVRD_POSS | NUMERIC VALUE | PID | 27 | 27 | 28 | 28 |
| PCM BRKOVR_ACTION | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCM CAM_SYNC | YES/NO | PID | NO | YES | YES | YES |
| PCM CATTEMP11 (Deg C) | DEG C (DEG F) | CAT11 Sensor | 494 (921.2) | 522 (971.6) | 747 (1, 376.6) | 911 (1, 671.8) |
| PCM CHT (Deg C) | DEG C (DEG F) | CHT Sensor | 98 (208.4) | 88 (190.4) | 87 (188.6) | 87 (188.6) |
| PCM CHT_V (V) | VOLTS | CHT Sensor | 3.45 | 3.75 | 3.79 | 3.80 |
| PCM CLRDIST (km) | KM (MILES) | PID | 0 (0) | 0 (0) | 0 (0) | 2.0 (1.24) |
| PCM DIST_AEIS (km) | KM (MILES) | PID | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| PCM DIST_BRKOVRD (km) | KM (MILES) | PID | 26 (16.16) | 26 (16.16) | 26.5 (16.47) | 27.5 (17.09) |
| PCM DTCCNT_OBD | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCM ECT (Deg C) | DEG C (DEG F) | ECT Sensor | 97 (60.27) | 87 (54.06) | 85 (52.82) | 85 (52.82) |
| PCM EGRMC1F | TRUE/FALSE | EGR Actuator | FALSE | FALSE | FALSE | FALSE |
| PCM EGRMC2F | TRUE/FALSE | EGR Actuator | FALSE | FALSE | FALSE | FALSE |
| PCM EGRMC3F | TRUE/FALSE | EGR Actuator | FALSE | FALSE | FALSE | FALSE |
| PCM EGRMC4F | TRUE/FALSE | EGR Actuator | FALSE | FALSE | FALSE | FALSE |
| PCM EGRPCT (%) | % | PID | 1 | 1 | 1 | 35 |
| PCM EGR_STEP (step) | POSITION | EGR Valve | 0 | 0 | 0 | 14 |
| PCM EQ_RAT11 | RATIO | PID | 0 | 1 | 0.98 | 0.97 |
| PCM ETC_ACT (Deg) | DEG | PID | 11.92 | 4.66 | 17.48 | 18.23 |
| PCM ETC_[TAC_PCT] (%) | % | PID | 9 | 7 | 17 | 9 |
| PCM ETC_TRIM (Deg) | DEG | PID | 0 | 0 | 0 | 0 |
| PCM EVAP020C | YES/NO | PID | NO | NO | NO | NO |
| PCM EVAPCP (%) | % | EVAPCP Valve | 0 | 0 | 30 | 12 |
| PCM EVAPCV (%) | %/ON-OFF | CANV Valve | 0 | 0 | 0 | 0 |
| PCM EVAPPCT (%) | % | PID | 0 | 0 | 30 | 12 |
| PCM EVAPSOAK | YES/NO | PID | NO | NO | NO | NO |
| PCM EVAPSTA | STATUS | PID | NOT RUNNING | NOT RUNNING | NOT RUNNING | NOT RUNNING |
| PCM FLI (%) | % | Fuel Level Sensor | 50 | 49 | 51 | 47 |
| PCM FLP (kPa) | kPa (PSI) | Fuel Pressure Sensor | 621 (90.07) | 550 (79.77) | 538 (78.03) | 547 (79.34) |
| PCM FLP_V (V) | VOLTS | Fuel Pressure Sensor | 4.02 | 3.59 | 3.52 | 3.57 |
| PCM FP (%) | % | Fuel Pump Control Module | 75 | 29 | 29 | 28 |
| PCM FPM (%) | % | PID | 40 | 40 | 40 | 40 |
| PCM FRP (kPa) | MPa (PSI) | FRP Sensor | 4.57 (662.82) | 6.38 (925.34) | 11.88 (1723.05) | 10.17 (1, 475.03) |
| PCM FRP_DSD (kPa) | MPa (PSI) | PID | 0.44 (63.82) | 6.38 (925.34) | 12.41 (1799.92) | 13.74 (1992.82) |
| PCM FRP_V (V) | VOLTS | FRP Sensor | 1.14 | 1.38 | 2.19 | 1.96 |
| PCM FRT_V (V) | VOLTS | FRT Sensor | 2.18 | 2.17 | 2.17 | 2.17 |
| PCM FTP_V (V) | VOLTS | FTP Sensor | 2.63 | 2.63 | 2.47 | 2.47 |
| PCM FUELSYS_CL | YES/NO | PID | NO | YES | YES | YES |
| PCM FUELSYS_OL | YES/NO | PID | NO | NO | NO | NO |
| PCM FUEL_RDY | YES/NO | PID | NO | NO | NO | NO |
| PCM F_VCV (%) | % | Fuel Injection Pump | 0 | 10 | 14 | 9 |
| PCM HTRCM11 (Amp) | mA | HO2S11 Sensor | 0 | 0 | 0 | 0 |
| PCM HTRCM12 (Amp) | mA | HO2S12 Sensor | 0 | 0 | 0 | 0 |
| PCM HTR11 | ON/OFF | HO2S11 Sensor | OFF | ON | ON | ON |
| PCM HTR12 | ON/OFF | HO2S12 Sensor | OFF | ON | ON | ON |
| PCM IAT (Deg C) | DEG C (DEG F) | IAT Sensor | 56 (132.8) | 55 (131) | 55 (131) | 47 (116.6) |
| PCM IAT11 (Deg C) | DEG C (DEG F) | IAT Sensor | 56 (132.8) | 55 (131) | 56 (132.8) | 47 (116.6) |
| PCM IAT12 (Deg C) | DEG C (DEG F) | IAT2 Sensor | 68 (154.4) | 66 (150.8) | 67 (152.6) | 62 (143.6) |
| PCM IAT1_V (V) | VOLTS | IAT Sensor | 1.16 | 1.21 | 1.18 | 1.47 |
| PCM IAT2 (Deg C) | DEG C (DEG F) | IAT2 Sensor | 68 (154.4) | 66 (150.8) | 67 (152.6) | 62 (143.6) |
| PCM IAT2_V (V) | VOLTS | IAT2 Sensor | 0.88 | 0.92 | 0.90 | 1.02 |
| PCM INJPWR_M (V) | VOLTS | PID | 12.69 | 12.89 | 12.83 | 12.53 |
| PCM KNOCK_1 | COUNT | KS11 Sensor | 999.00 | 103.00 | 218.00 | 474.00 |
| PCM KNOCK_2 | COUNT | KS12 Sensor | 999.00 | 94.00 | 263.00 | 491.00 |
| PCM LOAD (%) | % | PID | 0.00 | 60 | 80 | 95 |
| PCM LONGFT1 (%) | % | PID | (A) | -20 TO +20 | -20 TO +20 | -20 TO +20 |
| PCM MAF (g/s) | g/s | MAF Sensor | 0.00 | 6.31 | 25.16 | 47.95 |
| PCM MAF_HZ (Hz) | kHz | MAF Sensor | 0.71 | 3.07 | 5.39 | 6.66 |
| PCM MAP (kPa) | kPa (PSI) | MAP Sensor | 99 (14.36) | 62 (8.99) | 84 (12.18) | 100 (14.50) |
| PCM MAP_V (V) | VOLTS | MAP Sensor | 3.97 | 2.38 | 3.47 | 4.01 |
| PCM MIL_DIS (km) | KM (MILES) | PID | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| PCM MIL_OBD | ON/OFF | PID | OFF | OFF | OFF | OFF |
| PCM MISFIRE | TRUE/FALSE | PID | FALSE | FALSE | FALSE | FALSE |
| PCM MP_LRN | TRUE/FALSE | PID | TRUE | TRUE | TRUE | TRUE |
| PCM NUM_MISFIRE | COUNT | PID | 0 | 0 | 1 | 2 |
| PCM O2S11_CUR (mA) | mA/uA | HO2S11 Sensor | (A) | switching | switching | switching |
| PCM O2S11_HTR (%) | % | HO2S11 Sensor | 22 | 32 | 25 | 18 |
| PCM O2_DS_DISBL | TRUE/FALSE | PID | TRUE | TRUE | FALSE | FALSE |
| PCM O2S11_IMPED (V) | VOLTS | HO2S11 Sensor | 5.00 | 0.14 | 0.17 | 0.17 |
| PCM O2S11_READY | TRUE/FALSE | HO2S11 Sensor | FALSE | TRUE | TRUE | TRUE |
| PCM O2S12 (V) | VOLTS | HO2S12 Sensor | (A) | switching (D) | switching (D) | switching (D) |
| PCM OCTADJ_R_LRND | % | PID | -0 | -0 | -0 | -0 |
| PCM PATSENABL | ENABLED/DISABLED | PID | ENABLED | ENABLED | ENABLED | ENABLED |
| PCM RO2FT1 (%) | % | PID | 0 | -0.02 | -0.01 | 0.02 |
| PCM RPM (Rpm) | RPM | CKP Sensor | 0 | 900 | 2333 | 1813 |
| RPMDSD | RPM | PID | 900 | 900 | 870 | 870 |
| PCM SHRTFT1 (%) | % | PID | (A) | -10 TO +10 | -10 TO +10 | -10 TO +10 |
| PCM SPARKADV (Deg) | DEG | PID | 0.00 | 11.00 | 42.50 | 42.00 |
| PCM SYNC | YES/NO | PID | NO | YES | YES | YES |
| PCM TP1_LRN_TRIM (Deg) | DEG | ETBTPS | 6.13 | 6.13 | 6.13 | 6.13 |
| PCM TP2_LRN_TRIM (Deg) | DEG | ETBTPS | 0 | 0 | 0 | 0 |
| PCM TP_REL (%) | VOLTS | PID | 12 | 5 | 17 | 9 |
| PCM VCTSYS | OPEN LOOP/CLOSED LOOP ENABLED/DISABLED | PID | DISABLED | ENABLED | ENABLED | ENABLED |
| PCM VCT_EXH_ACT1 (Deg) | DEG | PID | 0 | 0 | 19.56 | 29.56 |
| PCM VCT_EXH_DC1 (%) | % | VCT12 Solenoid | 0 | 0 | 43 | 41 |
| PCM VCT_EXH_DIF1 (Deg) | DEG | PID | 0 | -0.06 | 0.31 | -1.19 |
| PCM VCT_INT_ACT1 (Deg) | DEG | PID | 0 | -5.75 | -24.31 | -0.31 |
| PCM VCT_INT_DC1 (%) | % | VCT11 Solenoid | 0 | 39 | 38 | 0 |
| PCM VCT_INT_DIF1 (Deg) | DEG | PID | 0 | 0.13 | 0.75 | 0.31 |
| PCM VPWR (V) | VOLTS | PID | VBAT | VBAT | VBAT | VBAT |
| PCM VREF (V) | VOLTS | PID | 5 | 5 | 5 | 5 |
| PCM VSS (Kph) | km/h (MPH) | PID | 0 (0) | 0 (0) | 48 km/h (30 MPH) | 89 km/h (55 MPH) |