PCM INSPECTION [MZI-3.7]


id0140c3802500


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

1.  Disconnect the negative battery cable.

2.  Remove the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

3.  Remove the windshield wiper arm and blade. (See WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION.)

4.  Remove the cowl grille. (See COWL GRILLE REMOVAL/INSTALLATION.)

5.  Remove the windshield wiper motor. (See WINDSHIELD WASHER MOTOR REMOVAL/INSTALLATION.)

6.  Remove the cowl panel. (See COWL PANEL REMOVAL/INSTALLATION.)

7.  Remove the PCM connector still connected.

8.  Install the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

9.  Connect the negative battery cable.


Typical Diagnostic Reference Values (PCM Terminal Voltage and/or Data Monitor)

ac9wzw00002365

PCM Terminal

(Reference)

Sensors/Inputs

Measured/PID Values

Units Measured/PID

KOEO

Hot Idle

48 KM/H (30MPH)

89 KM/H (55MPH)

1G
PSP
0.1/LOW
VBAT/HIGH (I)
0.1/LOW
0.1/LOW
DCV/HIGH-LOW
1BF
GENMN (GFS)
11.89/0
VBAT/50
VBAT/28
VBAT/25
DCV/%
1Y
APP1
3.9
3.9
3.5
3.3
DCV
1U
APP2
1.6
1.7
1.8
2.1
DCV
1H
FPM
OFF
ON
ON
ON
ON-OFF
1M
ACP
0.8/70
0.86/73
0.9/75
1.0/87
DCV/psi
1AR
MAF
0
0.7
1.4
1.5
DCV
1AN
MAF SIGRTN
0
0.6-1.9
1-1.6
1.3-2.3
DCV
1P
IAT
80 (K)
50 (K)
37 (K)
34 (K)
DEG F
1I
FTP
2.6/-0.01
2.6/-0.01
2.6/-0.01
2.6/-0.01
DCV/psi
1S
BOO
VBAT/OFF
0.1/ON (E)
VBAT/OFF
VBAT/OFF
DCV/ON-OFF
1T
BPA
0.1/OFF
VBAT/ON (E)
0.1/OFF
0.1/OFF
DCV/ON-OFF
1N
SCCS
5
0.1(P)
5
5
DCV
3Z
HO2S12
(L)
(D)
(D)
(D)
DCV
3AB
HO2S22
0.1
(D)
(D)
(D)
DCV
2AO
HO2S21
0
switching (C)
switching (C)
switching (C)
DCV
2AS
HO2S11
(L)
switching (C)
switching (C)
switching (C)
DCV
2AV
CHT
3.6/199
3.6/199
3.58/201
3.45/208
DCV/DEG F
2X
CMP2
0
5-7
13-16
20-23
Hz
2T
CMP1
0
5-7
13-16
20-23
Hz
2V
CKP
0
400-500
850-1050
1050-1150
Hz
2AF
KNOCK 1
23.99k
25.01k
25.73k
44.51k
N/A
2AL
TP2
1.1/25
0.8/15
1.0/19
1.4/27
DCV/%
2AN
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

PCM Terminal

(Reference)

Actuators/ Outputs

Measured/PID Values

Units Measured/PID

KOEO

Hot Idle

48 KM/H (30MPH)

89 KM/H (55MPH)

GENFDC
3.79
0
0
0
%
1AQ
SMC
0
0
0
0
DCV
2H
EVAPCV
0
0
0
0
%
1W
WAC/ACCR
OFF
OFF
OFF
OFF
ON-OFF
3N
HTR12
VBAT/OFF
0.2/ON
0.2/ON
0.2/ON
DCV/ON-OFF
3AM
HTR22
VBAT/OFF
0.2/ON
0.2/ON
0.2/ON
DCV/ON-OFF
2D
CD6F (CYL 6)
VBAT
VBAT
VBAT
VBAT
DCV
2C
CD5D (CYL 5)
VBAT
VBAT
VBAT
VBAT
DCV
2AX
CD4B (CYL 4)
VBAT
VBAT
VBAT
VBAT
DCV
2B
CD3E (CYL 3)
VBAT
VBAT
VBAT
VBAT
DCV
2AT
CD2C (CYL 2)
VBAT
VBAT
VBAT
VBAT
DCV
2BB
CD1A (CYL 1)
VBAT
VBAT
VBAT
VBAT
DCV
2BR
TACM (+)
3.7
VBAT
VBAT
VBAT
DCV
2BC
INJ2
0
2.6-3.2
2.5-5.5
3.5-8.5
mS
2BG
INJ4
0
2.6-3.2
2.5-5.5
3.5-8.5
mS
2BI
INJ6
0
2.6-3.2
2.5-5.5
3.5-8.5
mS
2BO
TACM (-)
3.7
VBAT
VBAT
VBAT
DCV
2BQ
INJ1
0
2.6-3.2
2.5-5.5
3.5-8.5
mS
2AY
INJ3
0
2.6-3.2
2.5-5.5
3.5-8.5
mS
2BL
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
2J
HTR11
0.1/ON (O)
0.1/ON
0.1/ON
0.1/ON
DCV/ON-OFF
2E
HTR21
0.1/ON (O)
0.1/ON
0.1/ON
0.1/ON
DCV/ON-OFF
1BI
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
2BP
VCTDC
0
0
47.32
80
%
2BK
VCTDC2
0
0
46.8
80
%
VCTADVERR
0
0.18
-0.37
-0.18
DEG
VCTADVERR2
0
0.06
-0.43
0
DEG

PCM Terminal

(Reference)

Other

Measured/PID Values

Units Measured/PID

KOEO

Hot Idle

48 KM/H (30MPH)

89 KM/H (55MPH)

1X, 1Z, 2AP
ETCVREF
5
5
5
5
DCV
1D, 1BJ
VREF
5
5
5
5
DCV
1BP, 1BK
VPWR
VBAT
VBAT
VBAT
VBAT
DCV
1V
KAPWR
VBAT
VBAT
VBAT
VBAT
DCV