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Glow Plugs, Checking

-- Reconnect the Automatic Glow Time Control Module -J179- and the Engine Control Module -J623- making sure all connection are secure before continuing Diagnosis.

-- Disconnect the T14 connector. Refer to applicable wiring diagram.

NOTE:

The Glow plug terminal/connector is not repairable. The harness must be replaced if damaged.

-- Using a multimeter, Check the resistance of the glow plug These are identified as Q10, Q11. Q12, Q13 connector terminal to engine ground.

T14 electrical harness connector terminal Measure to:
8 for Glow Plug 1 -Q10- engine ground
7 for Glow Plug 2 -Q11- engine ground
6 for Glow Plug 3 -Q12- engine ground
5 for Glow Plug 4 -Q13- engine ground

Specified value: 1.3 Ω (+/- 0.3 Ω at about 20° C).

If the specification was not obtained:

-- Check the glow plug or circuit for a short to voltage, open circuit or high resistance.

-- Replace the malfunctioning Glow Plug --.

If the specified value was obtained:

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