Typical Diagnostic Reference Values
NOTE:
Footnotes are referenced throughout the Typical Diagnostic Reference Value Charts. A letter in parentheses next to a value indicates supplemental information is available.
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. 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 | 1 (33.8) | 1 (33.8) | 1 (33.8) | 1 (33.8) |
| PCM AAT_V (V) | VOLTS | AAT Sensor | 3.48 | 3.46 | 3.80 | 3.87 |
| PCM AC_REQUEST | YES/NO | PID | NO | NO | NO | NO |
| PCM APP (%) | % | APP Sensor | 0 | 0 | 16 | 23 |
| PCM APP1 (V) | VOLTS | APP Sensor | 0.78 | 0.77 | 1.27 | 1.51 |
| PCM APP1_[APP_D] (%) | % | APP Sensor | 15 | 15 | 25 | 30 |
| PCM APP2 (V) | VOLTS | APP Sensor | 0.39 | 0.40 | 0.63 | 0.75 |
| PCM APP2_[APP_E] (%) | % | APP Sensor | 7 | 8 | 13 | 15 |
| PCM APP_MAXDIFF (Deg) | DEG | PID | 0 | 0 | 0.06 | 0.06 |
| PCM BARO (kPa) | kPa (PSI) | PID | 100 (14.50) | 100 (14.50) | 100 (14.50) | 100 (14.50) |
| PCM BARO_V (V) | VOLTS | PID | 3.92 | 3.92 | 3.91 | 3.91 |
| PCM BATT_V_INF (V) | VOLTS | PID | 11.96 | 15.19 | 15.09 | 15.09 |
| PCM BRKOVRD_POSS (Undefined / Not Used) | NUMERIC VALUE | PID | 149 | 149 | 150 | 150 |
| PCM BRKOVR_ACTION (Undefined / Not Used) | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCM CAC_T (Deg C) | DEG C (DEG F) | CACT Sensor | 30 (86) | 31 (87.8) | 29 (84.2) | 23 (73.4) |
| PCM CAC_V (V) | VOLTS | CACT Sensor | 2.22 | 2.18 | 2.28 | 2.56 |
| PCM CATTEMP11 (Deg C) | DEG C (DEG F) | CAT11 Sensor | 143 (289.4) | 141 (285.8) | 314 (597.2) | 401 (753.8) |
| CATTEMP12 | DEG C (DEG F) | CAT12 Sensor | 143 (289.4) | 141 (285.8) | 314 (597.2) | 401 (753.8) |
| PCM CHT (Deg C) | DEG C (DEG F) | CHT Sensor | 76 (168.8) | 74 (165.2) | 86 (186.8) | 88 (190.4) |
| PCM CHT2 (Deg C) | DEG C (DEG F) | CHT2 Sensor | 76 (168.8) | 77 (170.6) | 91 (195.8) | 95 (203) |
| PCM CHT2_V (V) | VOLTS | CHT2 Sensor | 0.85 | 0.82 | 0.56 | 3.57 |
| PCM CLRDIST (km) | KM (MILES) | PID | 0 (0) | 0 (0) | 0 (0) | 2 (1.24) |
| CRNKCAS_PRS | kPa (PSI) | Crankcase Pressure Sensor | -0.05 (-0.01) | -0.02 (-0) | -0.22 (-0.03) | 0.24 (0.03) |
| CRNKCAS_P_V | VOLTS | Crankcase Pressure Sensor | 3.90 | 3.92 | 3.83 | 4.04 |
| CYL_1-8_ACCL | NUMERIC VALUE | PID | (I) | -1 TO +1 | -1 TO +1 | -1 TO +1 |
| PCM DECHOKE | YES/NO | PID | YES | NO | NO | NO |
| PCM DIST_AEIS (km) | KM (MILES) | PID | 6148.5 (3820.50) | 6148.5 (3820.50) | 6149 (3820.81) | 6149.5 (3821.12) |
| PCM DIST_BRKOVRD (km) | KM (MILES) | PID | 3786.5 (2352.82) | 3786.5 (2352.82) | 3787 (2353.13) | 3788.5 (2354.07) |
| PCM DTCCNT (Undefined / Not Used) | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCM ECT (Deg C) | DEG C (DEG F) | ECT Sensor | 79 (174.2) | 78 (172.4) | 82 (179.6) | 87 (188.6) |
| PCM ECT1_V (V) | VOLTS | ECT Sensor | 0.76 | 0.79 | 0.71 | 0.62 |
| PCM EQ_RAT11 (Undefined / Not Used) | RATIO | PID | 0.00 | 0.00 | 0.99 | 1.03 |
| PCM EQ_RAT21 (Undefined / Not Used) | RATIO | PID | 0.00 | 0.00 | 0.99 | 0.97 |
| PCM ETC_ACT (Deg) | DEG | PID | 8.09 | 2.84 | 13.69 | 22.41 |
| PCM ETC_TRIM (Deg) | DEG | PID | -0.30 | -0.30 | -0.29 | -0.29 |
| PCM ETC_[TAC_PCT] (%) | % | PID | 9 | 3 | 17 | 27 |
| PCM EVAP020C | YES/NO | PID | NO | NO | NO | NO |
| PCM EVAPCP (%) | % | EVAPCP Valve | 0 | 4 | 0 | 88 |
| PCM EVAPCV (%) | %/ON-OFF | CANV Valve | 0 | 0 | 0 | 0 |
| PCM EVAPPCT (%) | % | PID | 0 | 4 | 0 | 88 |
| PCM EVAPSOAK | YES/NO | PID | YES | YES | YES | YES |
| PCM FAN_DSD (%) | % | PID | 0 | 0 | 0 | 0 |
| PCM FLI (%) | % | Fuel Level Sensor | 100 | 100 | 94 | 100 |
| PCM FLP (kPa) | kPa (PSI) | Fuel Pressure Sensor | 574 (83.25) | 474 (68.75) | 464 (67.30) | 484 (70.20) |
| PCM FLP_V (V) | VOLTS | Fuel Pressure Sensor | 3.74 | 3.31 | 3.00 | 3.19 |
| PCM FP (%) | % | Fuel Pump Control Module | 75 | 21 | 22 | 23 |
| PCM FPM (%) | % | PID | 40 | 41 | 40 | 40 |
| PCM FRP (kPa) | MPa (PSI) | FRP Sensor | 9.10 (1319.84) | 2.10 (304.58) | 11.76 (1705.64) | 18.53 (2687.55) |
| PCM FRP_DSD (kPa) | MPa (PSI) | PID | 0.47 (68.17) | 2.06 (298.78) | 11.38 (1650.53) | 17.87 (2591.82) |
| PCM FRP_V (V) | VOLTS | FRP Sensor | 1.58 | 0.53 | 1.77 | 2.69 |
| PCM FRT_V (V) | VOLTS | FRT Sensor | 5 | 5 | 5 | 5 |
| PCM FTP_V (V) | VOLTS | FTP Sensor | 2.61 | 2.61 | 2.61 | 2.53 |
| PCM FUELSYS_CL | YES/NO | PID | NO | YES | YES | YES |
| PCM FUELSYS_OL | YES/NO | PID | NO | NO | NO | NO |
| F_VCV | % | Fuel Injection Pump | 0 | 8 | 16 | 31 |
| PCM HFC | ON/OFF | PID | OFF | OFF | OFF | OFF |
| PCM HTR11 | ON/OFF | HO2S11 Sensor | OFF | ON | ON | ON |
| PCM HTR12 | ON/OFF | HO2S12 Sensor | OFF | ON | ON | ON |
| PCM HTR21 | ON/OFF | HO2S21 Sensor | OFF | ON | ON | ON |
| PCM HTR22 | ON/OFF | HO2S22 Sensor | OFF | ON | ON | ON |
| PCM HTRCM11 (Amp) | mA | HO2S11 Sensor | 0.00 | 0.00 | 0.00 | 0.00 |
| PCM HTRCM12 (Amp) | mA | HO2S12 Sensor | 0.00 | 0.00 | 0.00 | 0.00 |
| PCM HTRCM21 (Amp) | mA | HO2S21 Sensor | 0.00 | 0.00 | 0.00 | 0.00 |
| PCM HTRCM22 (Amp) | mA | HO2S22 Sensor | 0.00 | 0.00 | 0.00 | 0.00 |
| PCM IAT (Deg C) | DEG C (DEG F) | IAT Sensor | 32 (89.6) | 30 (86) | 23 (73.4) | 22 (71.6) |
| PCM IAT11 (Deg C) | DEG C (DEG F) | IAT Sensor | 32 (89.6) | 30 (86) | 23 (73.4) | 22 (71.6) |
| PCM IAT12 (Deg C) | DEG C (DEG F) | IAT2 Sensor | 44 (111.2) | 43 (109.4) | 38 (100.4) | 37 (98.6) |
| PCM IAT1_V (V) | VOLTS | IAT Sensor | 1.93 | 2.02 | 2.29 | 2.38 |
| PCM IAT2 (Deg C) | DEG C (DEG F) | IAT2 Sensor | 44 (111.2) | 43 (109.4) | 39 (102.2) | 36 (96.8) |
| PCM IAT2_V (V) | VOLTS | IAT2 Sensor | 1.61 | 1.65 | 1.80 | 1.90 |
| INJ_F | YES/NO | PID | NO | NO | NO | NO |
| INJ1-8_F | YES/NO | PID | NO | NO | NO | NO |
| PCM INJECTOR_OFF | -----/DISABLE | Injector 1-6 | ----- | ----- | ----- | ----- |
| PCM KNK_CNTR_CYL1 (Undefined / Not Used) | COUNT | PID | 0 | |||
| PCM KNK_CNTR_CYL2 (Undefined / Not Used) | COUNT | PID | 1 | 1 | 1 | 1 |
| PCM KNK_CNTR_CYL3 (Undefined / Not Used) | COUNT | PID | 0 | 0 | 0 | 0 |
| PCM KNK_CNTR_CYL4 (Undefined / Not Used) | COUNT | PID | 2 | 2 | 2 | 2 |
| PCM KNK_CNTR_CYL5 (Undefined / Not Used) | COUNT | PID | 0 | 0 | 0 | 0 |
| PCM KNK_CNTR_CYL6 (Undefined / Not Used) | COUNT | PID | 2 | 2 | 2 | 2 |
| PCM KNOCK_1 (Undefined / Not Used) | COUNT | KS11 Sensor | 999.00 | 30 | 49 | 61 |
| PCM KNOCK_2 (Undefined / Not Used) | COUNT | KS12 Sensor | 999.00 | 34 | 57 | 57 |
| PCM LFC | ON/OFF | PID | OFF | OFF | OFF | OFF |
| PCM LOAD (%) | % | PID | 0.00 | 28 | 39 | 68 |
| PCM LONGFT1 (%) | % | PID | (I) | -20 TO +20 | -20 TO +20 | -20 TO +20 |
| PCM LONGFT2 (%) | % | PID | (I) | -20 TO +20 | -20 TO +20 | -20 TO +20 |
| PCM MAP (kPa) | kPa (PSI) | MAP Sensor | 99 (14.36) | 36 (5.22) | 52 (7.54) | 89 (12.91) |
| PCM MAP_V (V) | VOLTS | MAP Sensor | 1.52 | 0.54 | 0.80 | 1.36 |
| PCM MFC | ON/OFF | PID | OFF | OFF | OFF | OFF |
| 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 (Undefined / Not Used) | COUNT | PID | 0 | 0 | 0 | 0 |
| PCM O2S11_CUR (mA) | mA/uA | HO2S11 Sensor | (I) | switching | switching | switching |
| PCM O2S11_HTR (%) | % | HO2S11 Sensor | 21 | 76 | 35 | 38 |
| PCM O2S11_IMPED (V) | VOLTS | HO2S11 Sensor | 5 | 10.02 | 1.01 | 1.03 |
| PCM O2S11_READY | TRUE/FALSE | HO2S11 Sensor | FALSE | FALSE | TRUE | TRUE |
| PCM O2S11_TR (Ohm) | Kohm | HO2S11 Sensor | 0.00 | 91.30 | 91.30 | 91.30 |
| PCM O2S12 (V) | VOLTS | HO2S12 Sensor | (I) | switching (D) | switching (D) | switching (D) |
| PCM O2S21_CUR (mA) | mA/uA | HO2S21 Sensor | (I) | switching | switching | switching |
| PCM O2S21_HTR (%) | % | HO2S21 Sensor | 21 | 76 | 35 | 35 |
| PCM O2S21_IMPED (V) | VOLTS | HO2S21 Sensor | 5 | 9.91 | 1.02 | 1.03 |
| PCM O2S21_READY | TRUE/FALSE | HO2S21 Sensor | FALSE | FALSE | TRUE | TRUE |
| PCM O2S21_TR (Ohm) | Kohm | HO2S21 Sensor | 0.00 | 97.10 | 97.10 | 97.10 |
| PCM O2S22 (V) | VOLTS | HO2S22 Sensor | (I) | switching (D) | switching (D) | switching (D) |
| PCM O2_DS_DISBL | TRUE/FALSE | PID | TRUE | TRUE | TRUE | TRUE |
| PCM OCTADJ_R_LRND (Undefined / Not Used) | % | PID | 0 | 0 | 0 | 0 |
| PCM PATSENABL | ENABLED / DISABLED | PID | DISABLED | DISABLED | DISABLED | DISABLED |
| PCM RO2FT1 (%) | % | PID | 0.00 | 0.00 | 0.01 | 0.00 |
| PCM RO2FT2 (%) | % | PID | 0.00 | 0.00 | -0.01 | 0.00 |
| PCM RPM (Rpm) | RPM | CKP Sensor | 0 | 877 | 1745 | 2060 |
| PCM RPM_DSD (Rpm) | RPM | PID | 625 | 625 | 625 | 625 |
| PCM SHRTFT1 (%) | % | PID | (I) | -10 TO +10 | -10 TO +10 | -10 TO +10 |
| PCM SHRTFT2 (%) | % | PID | (I) | -10 TO +10 | -10 TO +10 | -10 TO +10 |
| PCM SPARKADV (Deg) | DEG | PID | 8 | 7.50 | 37.00 | 38.00 |
| PCM SYNC | YES/NO | PID | NO | YES | YES | YES |
| PCM TCBP (kPa) | kPa (PSI) | TCBP Sensor | 99.7 (14.46) | 99.7 (14.46) | 101.2 (14.68) | 102.8 (14.91) |
| PCM TCBP_V (V) | VOLTS | TCBP Sensor | 1.52 | 1.52 | 1.55 | 1.57 |
| PCM TP1_LRN_TRIM (Deg) | DEG | ETBTPS | 10.13 | 10.13 | 10.13 | 10.13 |
| PCM TP1_PER (%) | % | ETBTPS | 18 | 12 | 18 | 18 |
| PCM TP2_LRN_TRIM (Deg) | DEG | ETBTPS | 0.00 | 0.00 | 0.00 | 0.00 |
| PCM TP_REL (%) | VOLTS | PID | 8 | 2 | 9 | 8 |
| PCM TURBO_BP1_STAT | FAULT/NO FAULT | TCBY Valve | NO FAULT | NO FAULT | NO FAULT | NO FAULT |
| PCM TURBO_BPASS (%) | % | TCBY Valve | 0 | 0 | 0 | 0 |
| PCM TURBO_WGATE (%) | % | Turbocharger Wastegate Control | 0 | 3 | 53 | 42 |
| PCM VCTSYS | OPEN LOOP/CLOSED LOOP | PID | OPEN LOOP | CLOSED LOOP | CLOSED LOOP | CLOSED LOOP |
| PCM VCT_EXH_ACT1 (Deg) | DEG | PID | 0.00 | 0.06 | 43.56 | 9.81 |
| PCM VCT_EXH_ACT2 (Deg) | DEG | PID | 0.00 | 0.19 | 44.38 | 10.31 |
| PCM VCT_EXH_DC1 (%) | % | VCT12 Solenoid | 0 | 0 | 43 | 41 |
| PCM VCT_EXH_DC2 (%) | % | VCT22 Solenoid | 0 | 0 | 43 | 42 |
| PCM VCT_EXH_DIF1 (Deg) | DEG | PID | 0.00 | 0.00 | 0.56 | 0.88 |
| PCM VCT_EXH_DIF2 (Deg) | DEG | PID | 0.00 | -0.19 | -0.25 | 0.63 |
| PCM VCT_INT_ACT1 (Deg) | DEG | PID | 0.00 | 0.00 | -0.56 | -22.44 |
| PCM VCT_INT_ACT2 (Deg) | DEG | PID | 0.00 | -0.06 | -0.63 | -21.50 |
| PCM VCT_INT_DC1 (%) | % | VCT11 Solenoid | 0 | 0 | 0 | 34 |
| PCM VCT_INT_DC2 (%) | % | VCT21 Solenoid | 0 | 0 | 0 | 35 |
| PCM VCT_INT_DIF1 (Deg) | DEG | PID | 0.00 | 0.00 | 0.69 | 2.00 |
| PCM VCT_INT_DIF2 (Deg) | DEG | PID | 0.00 | 0.06 | 0.63 | 1.38 |
| 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 | 48 km/h (30 MPH) | 89 km/h (55 MPH) |
| PCM WGATE_PRES (kPa) | kPa (PSI) | Wastegate Vacuum Sensor | 100.50 (14.58) | 100.50 (14.58) | 56.00 (8.12) | 57.50 (8.34) |
| PCM WGATE_V (V) | VOLTS | Wastegate Vacuum Sensor | 4.29 | 4.29 | 2.55 | 2.55 |
| PCM WGATE_VAC_INF (kPa) | kPa (PSI) | PID | 0.00 (0.00) | 0.00 (0.00) | 43.50 (6.31) | 42.00 (6.09) |