Was the Defogger System Check performed?

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Go to Step 2

Go to Defogger System Check

Inspect the HTD MIR fuse in the underhood fuse block.

Is the fuse open?

--

Go to Step 3

Go to Step 14

1. Remove the HTD MIR fuse.
2. Using the J 39200 Digital Multimeter (DMM), connect the load side of the HTD MIR fuse to battery ground (see note).

Is the resistance less than the specified value?

4 ohms

Go to Step 4

Go to Trouble-shooting Hints

Disconnect connector C1 of the underhood fuse block.

Does the resistance equal the specified value?

OL

Go to Step 6

Go to Step 5

Replace the underhood fuse block.

Is the repair complete?

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Go to Defogger System Check

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1. Reconnect connector C1 of the underhood fuse block.
2. Disconnect C601.
3. Using the J 39200 DMM, connect between the male end of terminal P of C601 to ground.

Is the resistance within the specified range?

8-10 ohms

Go to Step 7

Go to Step 9

1. Disconnect C604.
2. Using the J 39200 DMM, connect between terminal A and terminal H of the component end of C604.

Is the resistance within the specified range?

8-10 ohms

Go to Step 8

Go to Step 12

Repair the short to ground in CKT 2267 between C601 and C604.

Is the repair complete?

--

Go to Defogger System Check

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1. Disconnect C601.
2. Using the J 39200 DMM, connect between the male end of terminal P of C601 to ground.

Is the resistance within the specified range?

8-10 ohms

Go to Step 10

Go to Step 13

1. Disconnect C504.
2. Using the J 39200 DMM, connect between terminal A and terminal H of the component end of C604.

Is the resistance within the specified range?

8-10 ohms

Go to Step 11

Go to Step 12

Repair the short to ground in CKT 2267 between C601 and C504.

Is the repair complete?

--

Go to Defogger System Check

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Replace the heated mirror assembly.

Is the repair complete?

--

Go to Defogger System Check

--

Repair the short to ground in CKT 2267 between underhood fuse block connector C1 and C601.

Is the repair complete?

--

Go to Defogger System Check

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1. Turn the ignition switch to the ON position.
2. Operate the switches for the following devices:

•	The left front power window

•	The right front power window

•	The left front power door lock

•	The right front power door lock

•	The left front power mirror

•	The right front power mirror

Are any of these devices inoperative?

--

Go to Step 15

Go to Step 16

Is the repair complete?

--

Go to Defogger System Check

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1. Remove the defogger relay.
2. Disconnect connector C1 of the underhood fuse block.
3. Using the J 39200 DMM, connect between the defogger relay terminal 87 and terminal B8 of connector C1 at the underhood fuse block.

Is the resistance less than the specified value?

1 ohms

Go to Step 17

Go to Step 5

1. Connect a fused jumper (10A fuse minimum) between the underhood fuse block harness connector C1 terminal B8 and B+.
2. Using a test lamp, backprobe terminal A of C504 (left front door) or terminal A of C604 (right front door).

Does the test lamp light?

--

Go to Step 20

Go to Step 18

Using a test lamp, backprobe terminal A of C501 (left front) or terminal A of C601 (right front) to ground.

Does the test lamp light?

--

Go to Step 20

Go to Step 19

Locate and repair the open or high resistance in CKT 2267.

Is the repair complete?

--

Go to Defogger System Check

--

Using a test lamp, backprobe terminal H of C504 (left side) or terminal H of C604 (right side) to ground.

Does the test lamp light?

--

Go to Step 21

Go to Step 22

Locate and repair the open or high resistance in CKT 1850 (left side) or CKT 1850 (right side).

Is the repair complete?

--

Go to Defogger System Check

--

Replace the heated mirror assembly (left or right side).

Is the repair complete?

--

Go to Defogger System Check

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NOTE: The load side of the fuse is the terminal without battery voltage.