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In my case, the flashing glow plug indicator is caused by me replacing the stop lights with LED bulbs. Therefore, a cause for this flashing indication could be a blown stop light lamp. The test for this condition is; while the glow plug indicator is flashing, press and release the break pedal. This should stop the indicator from flashing. Check your stoplights. Or add a load resistor to your LED lamps if you have fitted these.
No power to the glow plugs means no power to the light also. You have a bad fuse or connection to the glow plug relay. Fix that and your good to go. Has nothing to do with your indicator lights on either side of dash. Glow Plug power indicator is labeled THAT and only that.
HI. This is an indication of a failing glow plug. It will be necessary to test each plug to isolate the issue, or run a diagnostic scan on the CPU. During the scan, you should be issued a code that will isolate the actual glow plug that is malfunctioning. If you insist on testing each plug, use my procedure below to assist. You can find the resistance specs in your operators manual.
A test light can be used to determine if the glow plugs are working.
1. With the test-light grounded, insert the test light probe into a glow-plug wire to check for continuity.
2. If the light comes on, check the other cylinders in the same manner. If the test light failed to light, check for continuity at the glow-plug relay.
3. If no power is present, check the control circuit of the glow plug relay.
4. If the control circuit is working, the relay may be defective (FYI, manufacturers may have the system fused and fusible links may be located throughout the system).
5. If the glow-plug circuit is working, the glow plugs themselves may be defective.
Checking glow-plug resistance:(Remove the plug for this test)
1. With an ohmmeter, connect one lead to the terminal and the other lead to the body.
2. Read the resistance and compare to specifications.
3. A visual inspection may also be necessary to check for excessive carbon buildup and physical damage to the tip.
4. A glow plug that has excessive carbon deposits on its tip can give the correct ohmmeter reading but still not work. Clean the tip with carbon cleaner.(DO NOT USE A BRUSH TIP CLEANER)
does the glow plug/coil light flash at all???? once would indicate glow plug relay fault! three times would indicate FUEL pump failure! sorry never experienced two flashes....
There are a number of different causes of this problem. Check all glow
plugs. Check glow plug relay. If both are ok....This may seem
unusual...Check the brake light switch situated at brake pedal. A
faulty brake light switch will cause the glow plug light to flash
Good luck with it
John
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