Coolant Temperature Gauge Circuit Test
- Ensure power circuit is okay. See POWER CIRCUIT TEST. Turn ignition on. Using jumper wire, ground coolant temperature gauge terminal for less than 10 seconds. See Fig 1
. Gauge should move smoothly to full scale ("H") position. Replace gauge if it does not function as described. If gauge functions as described, go to next step.
- Turn ignition off. Using ohmmeter, check continuity between ground and terminal No. 5 of instrument cluster connector No. 1. See Figure
. If continuity is not present, repair or replace wiring harness between instrument cluster and coolant temperature gauge sending unit (thermal transmitter). If continuity exists, test thermal transmitter. See THERMAL TRANSMITTER
under COMPONENT TESTS.
Courtesy of NISSAN MOTOR CO., U.S.A.