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Code 5 - Sun Sensor Error

Fig 1: Code 5 - Sun Sensor Error Circuit Diagram
G04720097Courtesy of SUZUKI OF AMERICA CORP.

This code will set if the output of the sun sensor indicates a probable short circuit or an open in the sensor or the associated wiring harness, or a malfunction of the ATC controller.

DIAGNOSTIC PROCEDURE

Step Action Value (s) Yes No
1
  1. Lift the sun sensor from the top of the dashboard.
  2. Secure the ATC harness below the sun sensor connector so it cannot fall through the opening in the top of the dashboard.
  3. Disconnect the sun sensor connector from the ATC harness.
  4. Examine the wiring from the sensor to the connector, and examine the connector for any signs of damage.
  5. Measure the resistance between the sun sensor connector terminals.

Is there any sign of damage in the wiring or connector or does the resistance equal the value specified?		 ≈ 0 Ω Go to Step 2 Go to Step 3
2 Repair the damaged wiring or the connector, or replace the sun sensor as required.
Is the repair complete?		 - System OK -
3
  1. Turn the ignition to ON.
  2. Measure the voltage between the 2 sun sensor connector terminals on the ATC harness.

Is the voltage equal to the specified value?		 < 4 V Go to Step 7 Go to Step 4
4 Check the terminals on the sun sensor connector.
Is any problem found with the connector?		 - Go to Step 5 Go to Step 6
5 Repair the connector terminals or replace the sun sensor or ATC controller as required.
Is the repair complete?		 - System OK -
6
  1. Reconnect the sun sensor to the ATC harness.
  2. Turn the ignition switch to ON.
  3. Observe the temperature display area.

Does this display indicate the continuing presence of a code 5 condition?		 - Go to Step 9 System OK
7
  1. Pull the ATC controller from the instrument panel, leaving the wiring harness connected.
  2. Measure the voltage between terminals A13 and B10 by backprobing the connectors.

Is the voltage equal to the value specified?		 < 4 V Go to Step 9 Go to Step 8
8
  1. Trace the wiring from controller terminals A13 and B10 to the sun sensor connector terminals on the ATC harness connectors.
  2. Repair any open or high resistance found in the wiring or connector terminals.

Is the repair complete?		 - System OK -
9 Replace the ATC controller.
Is the repair complete?		 - System OK -
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