Terminal Arrangement
TERMINAL ARRANGEMENT
| Terminal No. | Check item | Check condition (Engine condition) | Normal condition | |
|---|---|---|---|---|
| C121-A (3) | No.1 injector |
|
From 11-14V, momentarily drops slightly | |
| C121-A (11) | No.2 injector | |||
| C121-A (26) | No.3 injector | |||
| C121-A (4) | No.4 injector | |||
| C121-A (12) | No.5 injector | |||
| C121-A (27) | No.6 injector | |||
| C121-A (6) | EGR solenoid | Ignition switch: ON | B+ | |
|
From B+, momentarily drops | |||
| C121-A (20) (With Immobilizer) C121-A (21) (With Immobilizer) | Fuel pump relay | Ignition switch: ON | B+ | |
| Engine: Idle | 0-0.5V | |||
| C121-A (34) | Evaporative emission purge solenoid | Engine: Warm, 3000 r/min | Low: 0-1V High: B+ | |
| C121-A (15) | IG COIL 1/4 | Engine: 3000 r/min | Low: 0-0.1 V High: 0.5-3V |
|
| C121-A (16) | IG COIL 2/5 | |||
| C121-A (17) | IG COIL 3/6 | |||
| C121-B (1) | Power supply | Ignition switch: ON | B+ | |
| C121-B (7) | ||||
| C121-A (31) | Fan motor relay (High) | Radiator fan is not operating [Engine coolant temperature is 90°C(194°F) or less] | B+ | |
| Radiator fan is not operating at high speed [Engine coolant temperature is 105°C(221°F) or more] | 0~1V | |||
| C121-A (18) | Fan motor relay (Low) | Radiator fan is not operating [Engine coolant temperature is 90°C(194°F) or less] | B+ | |
| Radiator fan is not operating at low speed [Engine coolant temperature is 90-105°C(194~221°F) or more] | 0~1V | |||
| C121-A (21) (With Immobilizer) C121-A (20) (With Immobilizer) | A/C compressor clutch relay |
|
B+ or momentarily 6V or more→ 0~3V as A/C clutch cycles | |
| C121-B (3) | Engine ignition detect signal | Engine: Idle | Low: 0-0.5V High: 4.5-5V |
|
| C121-A (22) | Check engine/Malfunction indicator lamp | Ignition switch: OFF → ON | 0~3V→9~13V (After several seconds have elapsed) | |
| C121-B (12) | Power steering pressure switch | Engine: Warm, idle | When steering wheel is stationary | B+ |
| When steering wheel is turned | 0~3V | |||
| C121-B (9) | MFI relay (Power supply) | Ignition switch: OFF | B+ | |
| Ignition switch: ON | 0~3V | |||
| C121-B (22) | A/C pressure switch | Engine: Idle | Turn the A/C switch OFF | 0~3V |
| Turn the A/C switch ON (A/C compressor is operating) | B+ | |||
| C121-B (18) | Ignition switch-ST | Engine: Cranking | 8V or more | |
| C121-B (24) | Intake air temperature sensor | Ignition switch: ON | When intake air temperature is 0°C(32°F) | 3.4~3.6V |
| When intake air temperature is 20°C(68°F) | 2.5~2.7V | |||
| When intake air temperature is 40°C(104°F) | 1.7~1.9V | |||
| When intake air temperature is 80°C(176°F) | 0.6-0.8V | |||
| C121-C (3) | Heated oxygen sensor (B2/S2) |
|
0.6-1.0V | |
| C121-C (4) | Heated oxygen sensor (B1/S2) | |||
| C121-C (1) | Heated oxygen sensor (B2/S1) | Engine: Warm, 2500 r/min (Check using a digital type voltmeter) | 0 ←→ 0.8V (Change repeatedly) | |
| C121-C (2) | Heated oxygen sensor (B1/S1) | |||
| C121-B (26) | Backup power supply | Ignition switch: OFF | B+ | |
| C121-B (4) | Engine coolant temperature sensor | Ignition switch: ON | When engine coolant temperature is 0°C(32°F) | 3.4~3.6V |
| When engine coolant temperature is 20°C(68°F) | 2.5~2.7V | |||
| When engine coolant temperature is 40°C(104°F) | 1.5~1.7V | |||
| When engine coolant temperature is 80°C(176°F) | 0.5~0.7V | |||
| C121-C (8) | Throttle position sensor (Main) | Ignition switch: ON (Check for smooth voltage increase as throttle is moved from idle position to wide open throttle) | Idle | 0.5~1.0V |
| Wide open throttle valve | 4.2~4.8V | |||
| C121-C (10) | Vehicle speed sensor |
|
0 ←→ 5V (Change Repeatedly) | |
| C121-C (9) | Closed throttle position switch | Ignition switch: ON | Set throttle valve to idle position | 0~1V |
| Slightly open throttle valve | 4V or more | |||
| C121~B (16) | Camshaft position sensor | Engine: Cranking | 0.4~3.0V | |
| Engine: Idle | 0.5~2.0V | |||
| C121-B (5) | Crankshaft position sensor | Engine: Cranking | 0.4~4.0V | |
| Engine: Idle | 1.5~2.5V | |||
| C121-B (15) | Mass air flow sensor | Engine: Idle | 1.1~1.8V | |
| Engine: 2100 RPM at WOT (D-range) | 3.0~3.5V | |||
| C121-D (21) | Park/Neutral position switch (A/T) | Ignition switch: ON | Set selector lever to P or N | 0~3V |
| Set selector lever to D, 2, L or R | 8~14V | |||
| C121~A (26) | Heated oxygen sensor heater (B2/S2) | Engine: Warm, idle | 0~3V | |
| Engine: 5000 r/min | B+ | |||
| C121~A (27) | Heated oxygen sensor heater (B1/S2) | Engine: Warm, idle | 0~3V | |
| Engine: 5000 r/min | B+ | |||
| C121-A (3) | Heated oxygen sensor heater (B2/S1) | Engine: Warm, idle | 0~3V | |
| Engine: 5000 r/min | B+ | |||
| C121-A (4) | Heated oxygen sensor heater (B1/S1) | Engine: Warm, idle | 0~3V | |
| Engine: 5000 r/min | B+ | |||