Did you perform the Steering Wheel Control System Check?

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Go to Step 2

Go to Steering Wheel Control System Check

Do all of the radio functions operate normally?

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Go to Step 3

Go to Step 4

1. Disconnect the radio connector C2.
2. Turn the ignition switch to the RUN position.
3. Turn the radio ON.
4. Use the J 39200 in order to measure the voltage between the radio connector C2 terminal 14 and ground. While measuring, operate each steering wheel control button.
5. Compare each voltage with the steering wheel controls resistance/voltage chart.

Does the voltage measure within the specified range?

0-5 V

Go to Step 15

Go to Step 17

1. Disconnect the radio connector C2.
2. Turn on the radio.

Do all of the radio functions operate normally?

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Go to Step 5

Go to Step 15

Measure the voltage on CKT 1011 between the radio connector C2 terminal 14 and ground.

Does the measured voltage equal the specified value?

0 V

Go to Step 10

Go to Step 6

1. Disable the Supplemental Inflatable Restraint (SIR) System. Remove and disconnect the inflator module from the steering wheel. Refer to Inflatable Restraint Steering Wheel Module Replacement in Supplemental Inflatable Restraint.
2. Disconnect the steering wheel control switches connector. Refer to Steering Wheel Radio Controls.
3. Measure the voltage in CKT 1011 between the radio harness connector C2 terminal 14 and ground.

Does the measured voltage equal the specified value?

0 V

Go to Step 8

Go to Step 7

Repair the short to B+ in CKT 1011 between the radio harness connector C2 terminal 14 and the SIR coil assembly connector C. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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System OK

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1. Disconnect the steering wheel control switches connector.
2. Measure the voltage in CKT 1011 between the SIR coil assembly connector terminal C and ground.

Does the measured voltage equal the specified value?

0 V

Go to Step 9

Go to Step 26

Measure the voltage in CKT 1011 between the steering wheel controls connector terminal C and ground.

Does the measured voltage equal the specified value?

0 V

Go to Step 10

Go to Step 25

Measure the resistance on CKT 1011 between the radio connector C2 terminal 14 and ground.

Does the measured voltage equal the specified value?

∞

Go to Step 12

Go to Step 11

Repair the short to ground in CKT 1011 between the radio connector C2 terminal 14 and the SIR coil assembly connector terminal C. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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System OK

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Measure the resistance on CKT 1011 between the SIR coil assembly connector terminal C and ground.

Does the measured voltage equal the specified value?

∞

Go to Step 13

Go to Step 26

Measure the resistance on CKT 1011 between the steering wheel controls connector terminal C and ground.

Does the measured voltage equal the specified value?

∞

System OK

Go to Step 25

Service the radio.

Refer to one of the following procedures:

Did you complete the repair?

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System OK

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Test CKT 1011 for a faulty connection at the radio connector C2 terminal 14.

Did you find a faulty connection?

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Go to Step 16

Go to Radio/Audio System Schematics

Repair the faulty connection in CKT 1011 at the radio connector C2 terminal 14. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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System OK

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1. Disable the Supplemental Inflatable Restraint (SIR) System. Remove and disconnect the inflator module from the steering wheel.

Refer to Inflatable Restraint Steering Wheel Module Replacement in Supplemental Inflatable Restraint.

2. Disconnect the steering wheel control switches connector.
3. Measure the resistance between the steering wheel switches connector terminal A and terminal C. While measuring, operate each steering wheel control button.
4. Compare each resistance with the steering wheel controls resistance/voltage chart. Refer to Steering Wheel Control System Check .

Is the voltage equal to the value specified by the chart?

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Go to Step 18

Go to Step 25

Measure the voltage in CKT 43 between the steering wheel controls connector terminal A and ground. Terminal A is on the steering wheel control side.

Does the measured voltage equal the specified value?

0 V

Go to Step 19

Go to Step 25

Measure the voltage in CKT 43 between the steering wheel controls connector terminal A and ground.

Does the voltage equal the specified value?

B+

System OK

Go to Step 20

1. Disconnect the steering wheel control switches connector.
2. Measure the voltage in CKT 43 between the SIR coil assembly harness connector terminal A and ground.

Does the voltage equal the specified value?

B+

Go to Step 26

Go to Step 21

Backprobe and measure the voltage in CKT 43 between the inline fuse A connector A and ground.

Does the voltage equal the specified value?

B+

Go to Step 22

Go to Step 23

Repair the open circuit condition in CKT 43 between the SIR coil assembly connector terminal A and the inline fuse A terminal A. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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System OK

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1. Disconnect the radio connector C2. Refer to Steering Wheel Radio Controls.
2. Measure the voltage in CKT 43 between the inline fuse A connector terminal B and ground.

Does the voltage equal the specified value?

B+

Go to Step 27

Go to Step 24

Repair the open circuit condition in CKT 43 between the inline fuse A connector terminal B and the fuse block. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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System OK

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Replace the steering wheel control switches. Refer to Steering Wheel Control Switches in Steering Wheel and Column.

Did you complete the repair?

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System OK

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Replace the SIR coil assembly. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in Supplemental Inflatable Restraint.

Did you complete the repair?

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System OK

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Replace the inline fuse A.

Did you complete the repair?

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System OK

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