TROUBLE DIAGNOSIS — GENERAL DESCRIPTION; ECM Terminals and Reference Value (Cont'd) — Inspection Table 3
EF & EC-7067spec tableTerminal 38 throttle-position signal output reads 9.4V at fully depressed — verbatim from source; this is a buffered/multiplied signal, not raw 5V sensor supply.
ECM Terminals and Reference Value (Cont'd)
CG10, CGA3
ECM Inspection Table (Terminals 24-39)
24, 25, 51, 52
Wire colorG, W, Y, L
ItemIgnition signal (No. 2) / Ignition signal (No. 3) / Ignition signal (No. 1) / Ignition signal (No. 4)
Condition[Engine is running]
- Warm-up condition
- Idle speed
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V) — narrow pulses, 50 ms/div (see NEF168A)
24, 25, 51, 52
Wire colorG, W, Y, L
ItemIgnition signal (No. 2) / Ignition signal (No. 3) / Ignition signal (No. 1) / Ignition signal (No. 4)
Condition[Engine is running]
- Engine speed is 2,000 rpm
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V) — denser pulses, 50 ms/div (see NEF169A)
26
Wire colorY/B
ItemPower supply for ECM (Back-up)
Condition[Ignition switch "OFF"]
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)
27
Wire colorW/G
ItemECM relay (Self shut-off)
Condition[Engine is running]
[Ignition switch "OFF"]
- For 1 second after turning ignition switch "OFF"
Data (DC Voltage)0 - 1 V
27
Wire colorW/G
ItemECM relay (Self shut-off)
Condition[Ignition switch "OFF"]
- 1 second passed after turning ignition switch "OFF"
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)
28
Wire colorB
ItemECM ground
Condition[Engine is running]
- Idle speed
Data (DC Voltage)Approximately 0 V
34
Wire colorB
ItemECM ground
Condition[Engine is running]
- Idle speed
Data (DC Voltage)Approximately 0 V
36
Wire colorY
ItemEVAP canister purge volume control valve (ON/OFF duty)
Condition[Engine is running]
- Warm-up condition
- Accelerator pedal depressed
Data (DC Voltage)5 - 12 V — pulses, 50 ms/div (see NEF170A)
37
Wire colorW
ItemHeated oxygen sensor 1 heater (front)
Condition[Engine is running]
- Idle speed
Data (DC Voltage)Approximately 0 V
37
Wire colorW
ItemHeated oxygen sensor 1 heater (front)
Condition[Ignition switch "ON"]
- Engine stopped
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)
38
Wire colorR/L
ItemThrottle position sensor signal output
Condition[Ignition switch "ON"]
- Warm-up condition
- Accelerator pedal fully released
Data (DC Voltage)Approximately 2.4 V
38
Wire colorR/L
ItemThrottle position sensor signal output
Condition[Ignition switch "ON"]
- Accelerator pedal fully depressed
Data (DC Voltage)Approximately 9.4 V
39
Wire colorW/R
ItemHeated oxygen sensor 2 (rear)
Condition[Engine is running]
- After warming up to normal operating temperature and engine speed is 3,000 rpm
Data (DC Voltage)0 - Approximately 1.0 V