PGM-FI Control System - Troubleshooting Flowchart - TW Sensor
6-42flowchartTW (coolant temperature) sensor troubleshooting, CODE 6. Wire colors RED/WHT and GRN/WHT; connectors C210 and C151.
Troubleshooting Flowchart - TW Sensor
NOTE
Self-diagnosis LED indicator blinks six times: Most likely a problem in the Coolant Temperature (TW) Sensor circuit.
1
- Check Engine warning light is on. - LED indicates CODE 6.
2
Turn the ignition switch OFF.
3
Remove HAZARD fuse in the main fuse box for 10 seconds to reset ECU.
4
Turn the ignition switch ON.
5
Is Check Engine warning light on? Does LED indicate CODE 6?
NO
Intermittent failure. (test drive may be necessary).
YES
6
Warm up engine to normal operating temperature (cooling fan comes on).
7
Disconnect C210 and C151 connectors.
8
Measure resistance between RED/WHT terminal and GRN/WHT terminal at C151 connector.
9
Is there 200-400 Ω?
NO
Inspect for open or short in RED/WHT or GRN/WHT wire between C151 connector and TW sensor. If wires are OK, replace TW sensor.
YES
(To page 6-43)