Del Sol L4-1.5L SOHC (1993)
Temperature Gauge: Testing and Inspection
1. Check No. 15 (10A) fuse in under dash fuse/relay box before testing.
Fig. 1 Engine Coolant Temperature Unit
2. Ensure ignition switch is in Off position, then disconnect yellow/green wire from coolant temperature sending unit, Fig. 1, and ground it with a
jumper wire.
3. Turn ignition switch to On position.
4. Check as needle of coolant temperature gauge starts moving toward H mark. Turn ignition switch to Off position before pointer reaches H
mark on gauge dial. Failure to do so may damage gauge.
5. If pointer of gauge does not move, check the following:
a. Blown fuse in under dash fuse/relay box.
b. Open in yellow/green wire, yellow or red wire.
c. If fuse and wiring are satisfactory, replace coolant temperature gauge.
6. If gauge is satisfactory, inspect sending unit.
