Radiator Cooling Fans: Notes
The ECM controls radiator cooling fan(s) based on vehicle speed, engine coolant temperature and A/C switch position. The following tables list correct cooling fan operation based on certain conditions. See appropriate A/C SWITCH ON or A/C SWITCH OFF table. If cooling fan does not operate as specified, see appropriate RADIATOR (COOLING) FAN CONTROL TEST.
A/C SWITCH ON (VE30DE ENGINE)
| Engine Coolant Temp. °F (°C) |
Vehicle Speed MPH |
Radiator Fan |
| Less Than 203 (95) |
49 Or Less |
Low |
| " |
50 Or More |
Off |
| 203-212 (95-100) |
All Speeds |
Low |
| 212-221 (100-105) |
12 Or Less |
Low |
| " |
12 Or More |
High |
| Greater Than 221 (105) |
All Speeds |
High |
A/C SWITCH OFF (VE30DE ENGINE)
| Engine Coolant Temp. °F (°C) |
Vehicle Speed MPH |
Radiator Fan |
| Less Than 203 (95) |
All Speeds |
Off |
| 203-212 (95-100) |
11 Or Less |
Off |
| " |
12 Or More |
Low |
| 212-221 (100-105) |
11 Or Less |
Low |
| " |
12 Or More |
High |
| Greater Than 221 (105) |
All Speeds |
High |
A/C SWITCH ON (VG30E ENGINE)
| Engine Coolant Temp. °F (°C) |
Cooling Fan Speed |
Relay No. (Off Or On) |
| Less Than 201 (94) |
Low |
1 (On), 2 & 3 (Off) |
| 203-219 (95-104) |
High |
1, 2 & 3 (On) |
| Greater Than 221 (105) |
High |
1, 2 & 3 (On) |
A/C SWITCH OFF (VG30E ENGINE)
| Engine Coolant Temp. °F (°C) |
Cooling Fan Speed |
Relay No. (Off Or On) |
| Less Than 205 (96) |
Off |
1, 2 & 3 (Off) |
| 207-223 (97-106) |
Low |
1 (On), 2 & 3 (Off) |
| Greater Than 225 (107) |
High |
1, 2 & 3 (On) |