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Temperature warning for over-heated catalytic converter

Temperature warning for over-heated catalytic converter


Fault-tracing

When current (+15 circuit) is applied to relay pin 4, the warning lamp is grounded and comes on for about 3 seconds. Normally the warning lamp then goes out and does not come on again until the temperature exceeds the specified limit. If the lamp stays on, there is a break in the temperature sensor circuit.


1. Check that fuse 17 in the dashboard's distribution centre is intact and that there is voltage to the temperature sensor and to the relay.

2. Check connectors, wiring and ground connections.