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Protege Workshop Manual - Engine
PCM Inspection Using the SST (104 Pin Breakout Box)
1. Disconnect the negative battery cable.
2. Disconnect the PCM connector.
3. Connect the SST (104 Pin Breakout Box) to the PCM as shown.
4. Tighten the connector bolt.
Tightening torque
7.9¾10.7 N·m
{80¾110 kgf·m, 69.5¾95.4 in·lbf}
5. Connect the negative battery cable.
6. Measure the voltage at each terminal.
If any incorrect voltage is detected, inspect the related system(s),
wiring harnesses and connector(s) referring to the action column in the terminal voltage table.
Terminal voltage table (Reference)
Terminal Signal Connected to Test condition Voltage (V) Action
1*1 Shift solenoid E control Shift solenoid E Idle (P position) Below 1.0
Inspect shift solenoid E
(See SOLENOID VALVES INSPECTION )
Inspect related harness
1 range (1GR) B+
2 MIL control MIL (in instrument cluster) Ignition switch ON Below 1.0
Inspect MIL
Inspect related harness
Idle B+
3*2 M range switch Selector lever component Ignition switch ON Manual mode Below 1.0
Inspect selector lever
Inspect related harness
Others B+
4 B+ monitor Battery Under any condition B+
Inspect battery
(See BATTERY INSPECTION )
Inspect EGI fuse
Inspect related harness
5 Diagnostic test mode DLC terminal TEN Ignition switch ON Open terminal TEN B+
Inspect related harness
Short to ground terminal TEN Below 1.0
6 Clutch operation (MTX) Clutch switch Clutch pedal depressed Below 1.0
Inspect clutch switch
(See CLUTCH SWITCH INSPECTION [FS] )
Inspect related harness
Clutch pedal released B+
D range (ATX) TR switch*4 Ignition switch ON Selector lever is at D range B+
(terminal G) Inspect TR switch*4
(See TRANSAXLE RANGE (TR) SWITCH INSPECTION )
Inspect selector lever*3
Inspect related harness
Selector lever component*3 Selector lever is at other than D range Below 1.0
7*3 1 range TR switch Ignition switch ON Selector lever is at 1 range B+
(terminal E) Inspect TR switch
(See TRANSAXLE RANGE (TR) SWITCH INSPECTION )
Inspect related harness
Selector lever is at other then 1 range Below 1.0
8*2 Up switch Selector lever component Ignition switch ON Detects up-shift operation of selector lever in M range Below 1.0
Inspect selector lever
Inspect related harness
Others B+
9*3 2 range TR switch Ignition switch ON Selector lever is at 2 range B+
(terminal F) Inspect TR switch
(See TRANSAXLE RANGE (TR) SWITCH INSPECTION )
Inspect related harness
Selector lever is at other then 2 range Below 1.0
10 ¾ ¾ ¾ ¾ ¾
11 ¾ ¾ ¾ ¾ ¾
12*2 1st gear light Instrument cluster Ignition switch ON 1st gear Below 1.0
Inspect instrument cluster
Inspect related harness
Others Applox. 5
13 EPROM flashing DLC-2 terminal FEPS Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible.
Inspect related harness
14 ¾ ¾ ¾ ¾ ¾
15 ¾ ¾ ¾ ¾ ¾
16 ¾ ¾ ¾ ¾ ¾
17*2 2nd gear light Instrument cluster Ignition switch ON 2nd gear Below 1.0
Inspect instrument cluster
Inspect related harness
Others Applox. 5
18 CDCV control CDCV Ignition switch ON B+
Inspect CDCV
(See CANISTER DRAIN CUT VALVE (CDCV) INSPECTION )
Inspect related harness
Diagnosis executed (while on-board device control is carried out) Below 1.0
19 VICS control VICS solenoid valve Engine speed: above 4,750 rpm B+
Inspect VICS solenoid valve
(See VARIABLE INERTIA CHARGING SYSTEM (VICS) SOLENOID VALVE INSPECTION [FS] )
Inspect related harness
Engine speed: below4,750 rpm Below 1.0
20*2 Down switch Selector lever component Ignition switch ON Detects down-shift operation of selector lever in M range Below 1.0
Inspect selector lever
Inspect related harness
Others B+
21 NE (+) CKP sensor
Inspect using the wave profile. Inspect CKP sensor
(See Inspection Using An Oscilloscope (Reference) ) (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [FS] )
Inspect related harness
22 NE (-) CKP sensor
Inspect using the wave profile. Inspect CKP sensor
(See Inspection Using An Oscilloscope (Reference) ) (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [FS] )
Inspect related harness
23*1 Input/turbine speed (-) Input/turbine speed sensor
Inspect using the wave profile. Inspect input/turbine speed sensor
(See Inspection Using An Oscilloscope (Reference) ) (See INPUT/TURBINE SPEED SENSOR INSPECTION )
Inspect related harness
24 GND GND Under any condition Below 1.0
Inspect related harness
25 ¾ ¾ ¾ ¾ ¾
26 IGT1 Ignition coil (No. 1, 4 cylinders)
Inspect using the wave profile. Inspect ignition coil
(See Inspection Using An Oscilloscope (Reference) ) (See IGNITION COIL INSPECTION )
Inspect related harness
27*1 Shift solenoid D control Shift solenoid D Idle Selector lever is at P, N position and 1 range B+
Inspect shift solenoid D
(See SOLENOID VALVES INSPECTION )
Inspect related harness
Others Below 1.0
28*1 Vehicle speed output Speedometer (in instrument cluster)
Inspect using the wave profile. Inspect speedometer
(See Inspection Using An Oscilloscope (Reference) ) (See Speedometer )
Inspect related harness
29*3 O/D OFF signal O/D OFF switch Ignition switch ON O/D OFF switch pushed Below 1.0
Inspect O/D OFF switch
(See O/D OFF SWITCH INSPECTION (4AT) )
Inspect related harness
O/D OFF switch released B+
30 Generator output voltage Generator
(terminal P) Inspect using the wave profile. Inspect generator
(See Inspection Using An Oscilloscope (Reference) ) (See GENERATOR INSPECTION )
Inspect related harness
31 PSP PSP switch Ignition switch ON B+
Inspect PSP switch
(See POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [FS] )
Inspect power steering system
Idle Steering wheel at straight ahead position B+ Inspect related harness
While turning steering wheel Below 1.0
32*1 R position TR switch Ignition switch ON Selector lever is at R position B+
(terminal C) Inspect TR switch
(See TRANSAXLE RANGE (TR) SWITCH INSPECTION )
Inspect related harness
Selector lever is at other then R position Below 1.0
33 ¾ ¾ ¾ ¾ ¾
34 BARO/EGR boost EGR boost sensor Ignition switch ON (Barometric pressure at 102 kPa Approx. 4.0
{765 mmHg, 30 inHg}) Inspect EGR boost sensor
(See EGR BOOST SENSOR INSPECTION [FS] )
Inspect related harness
35 Catalytic converter efficiency HO2S (Rear) Ignition switch ON Below 1.0
Inspect HO2S (Rear)
(See HO2S (Front and Rear) Voltage Inspection )
Idle Engine cold Approx. 0 Inspect related harness
After warm up 0.1¾0.9
36 ¾ ¾ ¾ ¾ ¾
37*1 TFT TFT sensor Ignition switch ON TFT 20 °C 3¾4
{68 °F} Inspect TFT sensor
(See TRANSAXLE FLUID TEMPERATURE (TFT) SENSOR INSPECTION )
Inspect related harness
TFT 130 °C {266 °F} 0.2¾0.7
38 ECT ECT sensor Ignition switch ON ECT 20 °C 2.9¾3.1
{68 °F} Inspect ECT sensor
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [FS] )
Inspect related harness
After warm up 0.2¾1.0
39 IAT IAT sensor (integrated with MAF sensor) Ignition switch ON IAT 20 °C 2.3¾2.4
{68 °F} Inspect IAT sensor
(See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [FS] )
Inspect related harness
IAT 30 °C 1.7¾1.9
{86 °F}
40 ¾ ¾ ¾ ¾ ¾
41 A/C on signal Refrigerant pressure switch Idle A/C switch and fan switch on Below 1.0
Inspect A/C switch
(See REFRIGERANT PRESSURE SWITCH INSPECTION )
Inspect related harness
A/C switch off B+
42 Generator warning light control Generator warning light (in instrument cluster) Ignition switch ON Below 1.0
Inspect generator warning light
Inspect related harness
Idle B+
43*3 O/D OFF indicator light signal O/D OFF indicator light Ignition switch ON O/D OFF indicator light illuminates Below 1.0
Inspect O/D OFF indicator light
Inspect related harness
O/D OFF indicator light does not illuminate B+
44*1 Pressure control solenoid control (+) Pressure control solenoid
Inspect using the wave profile. Inspect pressure control solenoid
(See Inspection Using An Oscilloscope (Reference) ) (See SOLENOID VALVES INSPECTION )
Inspect related harness
45 Condenser fan control Condenser fan relay Ignition switch ON B+
Inspect condenser fan relay
(See RELAY INSPECTION )
Idle Condenser fan operating Below 1.0 Inspect related harness
Others B+
46 EGR valve #3 coil control EGR valve (terminal B) Ignition switch ON B+
Inspect EGR valve
(See EGR VALVE INSPECTION )
Inspect related harness
Idle B+
47 Cooling fan control Cooling fan relay Ignition switch ON B+
Inspect cooling fan relay
(See RELAY INSPECTION )
Idle Cooling fan operating Below 1.0 Inspect related harness
Others B+
48 Engine speed Tachometer (in instrument cluster), DLC terminal IG-
Inspect using the wave profile. Inspect tachometer
(See Inspection Using An Oscilloscope (Reference) ) (See Tachometer )
Inspect related harness
49 ¾ ¾ ¾ ¾ ¾
50 ¾ ¾ ¾ ¾ ¾
51 GND GND Under any condition Below 1.0
Inspect related harness
52 IGT2 Ignition coil (No. 2, 3 cylinders)
Inspect using the wave profile. Inspect ignition coil
(See Inspection Using An Oscilloscope (Reference) ) (See IGNITION COIL INSPECTION )
Inspect related harness
53 Generator field coil control Generator
(terminal D) Inspect using the wave profile. Inspect generator
(See Inspection Using An Oscilloscope (Reference) ) (See GENERATOR INSPECTION )
Inspect related harness
54 IAC (+) IAC valve Ignition switch ON B+
Inspect IAC valve
(See IDLE AIR CONTROL (IAC) VALVE INSPECTION [FS] )
Inspect related harness
Idle (After warm up and E/L off) B+
55 Back-up power supply Battery (positive terminal) Under any condition B+
Inspect battery
(See BATTERY INSPECTION )
Inspect EGI fuse
Inspect related harness
56 EGR valve #4 coil control EGR valve Ignition switch ON Below 1.0
(terminal F) Inspect EGR valve
(See EGR VALVE INSPECTION )
Inspect related harness
Idle Below 1.0
57 Knocking Knock sensor (+) Ignition switch ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) Below 1.0
Inspect knock sensor
(See KNOCK SENSOR INSPECTION [FS]
Inspect related harness
58 Vehicle speed Speedometer (MTX)
Inspect using the wave profile. Inspect VSS
(See Inspection Using An Oscilloscope (Reference) ) (See Speedometer )
Inspect related harness
VSS (ATX)
Inspect VSS
(See VEHICLE SPEEDOMETER SENSOR (VSS) INSPECTION [ATX] )
Inspect related harness
59 Knocking Knock sensor (-) Ignition switch ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) Below 1.0
Inspect knock sensor
(See KNOCK SENSOR INSPECTION [FS]
Inspect related harness
60 HO2S (Front) HO2S (Front) Ignition switch ON 0¾1.0
Inspect HO2S (Front)
(See HO2S (Front and Rear) Voltage Inspection )
Idle After warm up 0¾1.0
Acceleration 0.5¾1.0 Inspect related harness
Deceleration 0¾0.5
61 ¾ ¾ ¾ ¾ ¾
62 Fuel tank pressure Fuel tank pressure sensor Ignition switch ON Fuel tank pressure 0 kPa {0 mmHg, Approx. 2.5
0 inHg} Inspect fuel tank pressure sensor
(See FUEL TANK PRESSURE SENSOR INSPECTION [FS] )
Inspect related harness
Fuel tank pressure 1 kPa {7.5 mmHg, Approx. 2.8
0.3 inHg}
63 Fuel tank level Fuel gauge sender unit Full fuel 0.2¾0.5
Inspect fuel gauge sender unit
(See Fuel Gauge )
Half fuel 2.0¾2.8 Inspect related harness
Empty fuel 3.4¾4.4
64 Neutral position (MTX) Neutral switch Shift lever is at neutral position Below 1.0
Inspect neutral switch
(See NEUTRAL SWITCH INSPECTION [FS] )
Inspect related harness
Shift lever is not at neutral position B+
Load/no load signal (ATX) TR switch Ignition switch ON Selector lever is at P or N position Below 1.0
(terminal H) Inspect TR switch
(See TRANSAXLE RANGE (TR) SWITCH INSPECTION )
Inspect related harness
Others B+
65 ¾ ¾ ¾ ¾ ¾
66 ¾ ¾ ¾ ¾ ¾
67 Purge control Purge solenoid valve
Inspect using the wave profile. Inspect purge solenoid valve
(See Inspection Using An Oscilloscope (Reference) ) (See PURGE SOLENOID VALVE INSPECTION )
Inspect related harness
68 EGR valve #1 coil control EGR valve Ignition switch ON Below 1.0
(terminal E) Inspect EGR valve
(See EGR VALVE INSPECTION )
Inspect related harness
Idle Below 1.0
69 ¾ ¾ ¾ ¾ ¾
70 ¾ ¾ ¾ ¾ ¾
71 Power supply Main relay Ignition switch ON B+
Inspect main relay
(See RELAY INSPECTION )
Inspect EGI fuse
Inspect related harness
Ignition switch OFF Below 1.0
72 EGR valve #2 coil control EGR valve Ignition switch ON B+
(terminal A) Inspect EGR valve
(See EGR VALVE INSPECTION )
Inspect related harness
Idle B+
73 VTCS control VTCS solenoid valve ECT above 67.5 °C {154 °F} while idling B+
Inspect VTCS solenoid valve
(See VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SOLENOID VALVE INSPECTION [FS] )
Inspect related harness
ECT below 67.5 °C {154 °F} and engine speed below 3,250 rpm Below 1.0
74 Fuel injection (#3) Fuel injector No.3
Inspect using the wave profile. Inspect fuel injector No.3
(See Inspection Using An Oscilloscope (Reference) ) (See FUEL INJECTOR INSPECTION )
Inspect related harness
75 Fuel injection (#1) Fuel injector No.1
Inspect using the wave profile. Inspect fuel injector No.1
(See Inspection Using An Oscilloscope (Reference) ) (See FUEL INJECTOR INSPECTION )
Inspect related harness
76 GND GND Under any condition Below 1.0
Inspect related harness
77 GND GND Under any condition Below 1.0
Inspect related harness
78*2 3rd gear light Instrument cluster Ignition switch ON 3rd gear Below 1.0
Inspect instrument cluster
Inspect related harness
Others Applox. 5
79 K-LINE (serial communication) DLC terminal KLN Because this terminal is for serial communication, good/no good judgment by terminal voltage is not possible.
Inspect related harness
80 Fuel pump control Fuel pump relay Ignition switch ON B+
Inspect fuel pump relay
(See RELAY INSPECTION )
Cranking Below 1.0 Inspect related harness
Idle Below 1.0
81*1 Pressure control solenoid control (-) Pressure control solenoid
Inspect using the wave profile. Inspect pressure control solenoid
(See Inspection Using An Oscilloscope (Reference) ) (See SOLENOID VALVES INSPECTION )
Inspect related harness
82*1 Shift solenoid A control Shift solenoid A
Inspect using the wave profile. Inspect shift solenoid A
(See Inspection Using An Oscilloscope (Reference) ) (See SOLENOID VALVES INSPECTION )
Inspect related harness
83 IAC (-) IAC valve
Inspect using the wave profile. Inspect IAC valve
(See Inspection Using An Oscilloscope (Reference) ) (See IDLE AIR CONTROL (IAC) VALVE INSPECTION [FS] )
Inspect related harness
84*1 Input/turbine speed (+) Input/turbine speed sensor
Inspect using the wave profile. Inspect input/turbine speed sensor
(See Inspection Using An Oscilloscope (Reference) ) (See INPUT/TURBINE SPEED SENSOR INSPECTION )
Inspect related harness
85 SGC(+) CMP sensor
Inspect using the wave profile. Inspect CMP sensor
(See Inspection Using An Oscilloscope (Reference) ) (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [FS] )
Inspect related harness
86 SGC(-) CMP sensor
Inspect using the wave profile. Inspect CMP sensor
(See Inspection Using An Oscilloscope (Reference) ) (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [FS] )
Inspect related harness
87 ¾ ¾ ¾ ¾ ¾
88 MAF MAF sensor Ignition switch ON 0.9¾2.0
Inspect MAF sensor
(See MASS AIR FLOW (MAF) SENSOR INSPECTION [FS] )
Inspect related harness
Idle 1.7¾2.4
89 Throttle position TP sensor Ignition switch ON CTP 0.1¾1.1
Inspect TP sensor
(See THROTTLE POSITION (TP) SENSOR INSPECTION [FS] )
Inspect related harness
WOT 3.0¾4.6
90 Constant voltage (Vref) TP sensor, EGR boost sensor, Fuel tank pressure sensor Ignition switch ON Approx. 5.0
Inspect related harness
91 Sensor GND ECT sensor, IAT sensor, EGR boost sensor, Fuel tank pressure sensor, TP sensor, HO2S (Front, Rear), TFT sensor Under any condition Below 1.0
Inspect related harness
92 Brake Brake switch Brake pedal depressed B+
Inspect brake switch
(See BRAKE SWITCH INSPECTION )
Inspect related harness
Brake pedal released Below 1.0
93 HO2S (Rear) heater control HO2S (Rear) Idle ECT above 70 °C {158 °F} Below 1.0
Inspect HO2S (Rear)
(See HO2S Heater (Front and Rear) Resistance Inspection )
Inspect related harness
HO2S (Rear) is malfunctioning B+
94 HO2S (Front) heater control HO2S (Front) Ignition switch ON (engine stopped) B+
Inspect HO2S (Front) heater.
(See HO2S Heater (Front and Rear) Resistance Inspection )
Approx. 15 s after engine start with ECT 20¾30°C {68¾86 °F} Below 1.0 Inspect related harness
Others Below 1.0 Û B+
95 PRC PRC solenoid valve Ignition switch ON B+
Inspect PRC solenoid valve
(See PRC SOLENOID VALVE INSPECTION )
Inspect related harness
After hot start Below 1.0
96 A/C control A/C relay Idle A/C switch and fan switch on Below 1.0
Inspect A/C relay
(See RELAY INSPECTION )
Inspect related harness
A/C switch off B+
97 Power supply Main relay Ignition switch ON B+
Inspect main relay
(See RELAY INSPECTION )
Inspect related harness
Ignition switch off Below 1.0
98 EGR boost sensor switching control EGR boost solenoid valve Ignition switch ON B+
Inspect EGR boost solenoid valve
(See EGR BOOST SENSOR SOLENOID VALVE INSPECTION )
Inspect related harness
Idle B+
99*1 Shift solenoid B control Shift solenoid B
Inspect using the wave profile. Inspect shift solenoid B
(See Inspection Using An Oscilloscope (Reference) ) (See SOLENOID VALVES INSPECTION )
Inspect related harness
100 Fuel injection (#4) Fuel injector No.4
Inspect using the wave profile. Inspect fuel injector No.4
(See Inspection Using An Oscilloscope (Reference) ) (See FUEL INJECTOR INSPECTION )
Inspect related harness
101 Fuel injection (#2) Fuel injector No.2
Inspect using the wave profile. Inspect fuel injector No.2
(See Inspection Using An Oscilloscope (Reference) ) (See FUEL INJECTOR INSPECTION )
Inspect related harness
102*1 Shift solenoid C Control Shift solenoid C
Inspect using the wave profile. Inspect shift solenoid C
(See Inspection Using An Oscilloscope (Reference) ) (See SOLENOID VALVES INSPECTION )
Inspect related harness
103 GND GND Under any condition Below 1.0
Inspect related harness
104*2 4th gear light Instrument cluster Ignition switch ON 4th gear Below 1.0
Inspect instrument cluster
Inspect related harness
Others Applox. 5
*1
ATX only
*2
For Sport AT
*3
For 4AT
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ECU PIN OUT Protege
