Pcm Inspection
CAUTION:
- The PCM terminal voltage can vary with the conditions when measuring and changes due to aged deterioration on the vehicle, causing false diagnosis. Therefore determine comprehensively where the malfunction occurs among the input systems, output systems, and the PCM.
PCM inspection preparation
- Disconnect the negative battery cable.
- Remove the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
- Remove the windshield wiper arm and blade. (See WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION .)
- Remove the cowl grille. (See COWL GRILLE REMOVAL/INSTALLATION .)
- Remove the windshield wiper motor. (See WINDSHIELD WASHER MOTOR REMOVAL/INSTALLATION .)
- Remove the cowl panel. (See COWL PANEL REMOVAL/INSTALLATION .)
- Remove the PCM connector still connected.
- Install the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
- Connect the negative battery cable.
Typical Diagnostic Reference Values
PID VALUES CHART
| Sensors/Inputs | Measured/PID Values | Units Measured/PID | |||
|---|---|---|---|---|---|
| KOEO | Hot Idle | 48 KM/H (30 MPH) | 89 KM/H (55 MPH) | ||
| PSP | 0.1/LOW | VBAT/HIGH (I) | 0.1/LOW | 0.1/LOW | DCV/HIGH-LOW |
| GENMN (GFS) | 11.89/0 | VBAT/50 | VBAT/28 | VBAT/25 | DCV/% |
| APP1 | 3.9 | 3.9 | 3.5 | 3.3 | DCV |
| APP2 | 1.6 | 1.7 | 1.8 | 2.1 | DCV |
| FPM | OFF | ON | ON | ON | ON-OFF |
| ACP | 0.8/70 | 0.86/73 | 0.9/75 | 1.0/87 | DCV/psi |
| MAF | 0 | 0.7 | 1.4 | 1.5 | DCV |
| MAF SIGRTN | 0 | 0.6-1.9 | 1-1.6 | 1.3-2.3 | DCV |
| IAT | 80 (K) | 50 (K) | 37 (K) | 34 (K) | DEG F |
| FTP | 2.6/-0.01 | 2.6/-0.01 | 2.6/-0.01 | 2.6/-0.01 | DCV/psi |
| BOO | VBAT/OFF | 0.1/ON (E) | VBAT/OFF | VBAT/OFF | DCV/ON-OFF |
| BPA | 0.1/OFF | VBAT/ON (E) | 0.1/OFF | 0.1/OFF | DCV/ON-OFF |
| FEPS | 0.5-0.6 | 0.5-0.6 | 0.5-0.6 | 0.5-0.6 | DCV |
| SCCS | 5 | 0.1 (P) | 5 | 5 | DCV |
| HO2S12 | (L) | (D) | (D) | (D) | DCV |
| HO2S22 | 0.1 | (D) | (D) | (D) | DCV |
| HO2S21 | 0 | switching (C) | switching (C) | switching (C) | DCV |
| HO2S11 | (L) | switching (C) | switching (C) | switching (C) | DCV |
| CHT | 3.6/199 | 3.6/199 | 3.58/201 | 3.45/208 | DCV/DEG F |
| CMP2 | 0 | 5-7 | 13-16 | 20-23 | Hz |
| CMP1 | 0 | 5-7 | 13-16 | 20-23 | Hz |
| CKP | 0 | 400-500 | 850-1050 | 1050-1150 | Hz |
| KNOCK 1 | 23.99k | 25.01k | 25.73k | 44.51k | N/A |
| TP2 | 1.1/25 | 0.8/15 | 1.0/19 | 1.4/27 | DCV/% |
| TP1 | 4.1/17 | 4.4/13 | 4.2/16 | 4.0/19 | DCV/% |
| ACCS | VBAT/OFF | VBAT/ON (A) | VBAT/OFF | VBAT/OFF | DCV/ON-OFF |
| APP | 3.9 | 0 | 0 | 22 | % |
| APP_FLT | NO FAULT | NO FAULT | NO FAULT | NO FAULT | FAULT- NO FAULT |
| CPP/PNP | NEUTRAL | NEUTRAL | DRIVE | DRIVE | NEUTRAL-DRIVE |
| ETC_ACT | 7.56 | 1.27 | 6.22 | 12.74 | DEG |
| ETC_DSD | 7.62 | 1.31 | 6.19 | 12.73 | DEG |
| ETC_TRIM | 0.23 | 0.21 | 0.24 | 0.24 | DEG |
| FANVAR | NO FAULT | NO FAULT | NO FAULT | NO FAULT | FAULT- NO FAULT |
| FLI | 71 (H) | 72 (H) | 82 (H) | 81 (H) | % |
| LOAD | 51.4 (L) | 16.1 | 35.4 | 34.7 | % |
| MISFIRE | NO | NO | NO | NO | YES-NO |
| RPM | 0 | 600 | 1200 | 1500 | RPM |
| VSS | 0 | 0 | 30 | 55 | MPH |
| WAC F | NO FAULT | NO FAULT | NO FAULT | NO FAULT | FAULT- NO FAULT |
PID VALUES CHART
| Actuators/Outputs | Measured/PID Values | Units Measured/PID | |||
|---|---|---|---|---|---|
| KOEO | Hot Idle | 48 KM/H (30 MPH) | 89 KM/H (55 MPH) | ||
| GENFDC | 3.79 | 0 | 0 | 0 | % |
| SMC | 0 | 0 | 0 | 0 | DCV |
| CTO | 0 | 0 | 0 | 0 | Hz |
| EVMV | 0 | 337 | 0 | 847 | mA |
| EVAPCV | 0 | 0 | 0 | 0 | % |
| FP | 8.3/75 | 3.6/27 | 3.6/27 | 3.8/29 | DCV/% |
| WAC/ACCR | OFF | OFF | OFF | OFF | ON-OFF |
| HTR12 | VBAT/OFF | 0.2/ON | 0.2/ON | 0.2/ON | DCV/ON-OFF |
| HTR22 | VBAT/OFF | 0.2/ON | 0.2/ON | 0.2/ON | DCV/ON-OFF |
| CD6F (CYL 6) | VBAT | VBAT | VBAT | VBAT | DCV |
| CD5D (CYL 5) | VBAT | VBAT | VBAT | VBAT | DCV |
| CD4B (CYL 4) | VBAT | VBAT | VBAT | VBAT | DCV |
| CD3E (CYL 3) | VBAT | VBAT | VBAT | VBAT | DCV |
| CD2C (CYL 2) | VBAT | VBAT | VBAT | VBAT | DCV |
| CD1A (CYL1) | VBAT | VBAT | VBAT | VBAT | DCV |
| PCVHC | 0 | 0 | 0 | 0 | % |
| TACM (+) | 3.7 | VBAT | VBAT | VBAT | DCV |
| INJ2 | 0 | 2.6-3.2 | 2.5-5.5 | 3.5-8.5 | mS |
| INJ4 | 0 | 2.6-3.2 | 2.5-5.5 | 3.5-8.5 | mS |
| INJ6 | 0 | 2.6-3.2 | 2.5-5.5 | 3.5-8.5 | mS |
| TACM (-) | 3.7 | VBAT | VBAT | VBAT | DCV |
| INJ1 | 0 | 2.6-3.2 | 2.5-5.5 | 3.5-8.5 | mS |
| INJ3 | 0 | 2.6-3.2 | 2.5-5.5 | 3.5-8.5 | mS |
| INJ5 | 0 | 2.6-3.2 | 2.5-5.5 | 3.5-8.5 | mS |
| VCTADV | 0 | -.031 | -27.56 | -30.94 | DEG |
| VCTADV2 | 0 | 0 | -27.69 | -31.06 | DEG |
| HTR11 | 0.1/ON (O) | 0.1/ON | 0.1/ON | 0.1/ON | DCV/ON-OFF |
| HTR21 | 0.1/ON (O) | 0.1/ON | 0.1/ON | 0.1/ON | DCV/ON-OFF |
| FANVAR | 0 | 0 | 0 | 0 | % |
| FANDC | 7.5 | 7.5 | 7.5 | 7.5 | % |
| FP | ON/OFF | ON | ON | ON | ON-OFF |
| LONGFT1 | (L) | (-)20-(+)20 | (-)20-(+)20 | (-)20-(+)20 | % |
| LONGFT2 | (L) | (-)20-(+)20 | (-)20-(+)20 | (-)20-(+)20 | % |
| MIL | OFF | OFF | OFF | OFF | ON-OFF |
| SHRTFT1 | (L) | (-)10-(+)10 | (-)10-(+)10 | (-)10-(+)10 | % |
| SHRTFT2 | (L) | (-)10-(+)10 | (-)10-(+)10 | (-)10-(+)10 | % |
| SPARKADV | 10 | 13.25 | 44 | 45.25 | DEG |
| VCTDC | 0 | 0 | 47.32 | 80 | % |
| VCTDC2 | 0 | 0 | 46.8 | 80 | % |
| VCTADVERR | 0 | 0.18 | -0.37 | -0.18 | DEG |
| VCTADVERR2 | 0 | 0.06 | -0.43 | 0 | DEG |
PID VALUES CHART
| Other | Measured/PID Values | Units Measured/PID | |||
|---|---|---|---|---|---|
| KOEO | Hot Idle | 48 KM/H (30 MPH) | 89 KM/H (55 MPH) | ||
| ETCVREF | 5 | 5 | 5 | 5 | DCV |
| VREF | 5 | 5 | 5 | 5 | DCV |
| VPWR | VBAT | VBAT | VBAT | VBAT | DCV |
| KAPWR | VBAT | VBAT | VBAT | VBAT | DCV |