Chrysler Voyager. Manual — part 199

TEST

ACTION

APPLICABILITY

1

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Turn the ignition on.
Measure the voltage of the Protected Ignition circuit.
Is the voltage above 10.0 volts?

All

Yes

→ Go To 2

No

→ Go To 16

2

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Turn the ignition on.
Measure the voltage of the KDB 2 Data circuit.
Is the voltage above 10.0 volts?

All

Yes

→ Go To 3

No

→ Go To 13

3

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Turn the ignition on.
Measure the voltage of the KDB 2 Data circuit.
Is the voltage above 1.0 volt?

All

Yes

→ Repair the KDB 2 Data circuit for a short to voltage.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
Select Lab Scope.
Select Live.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the arrows to set the voltage range to 20 volts, the Offset to 4.0, and
the Probe to x10. Press F2 again and set the divisions to 40ms/Div, then press F2
again when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the KDB 2
Clock circuit in the ATC Remote Sensor harness connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
NOTE: The lab scope pattern should look similar to the example given in the
support material and cycle from approximately 0 volts to 8.0 volts.
Did the lab scope pattern and voltage react as noted above?

All

Yes

→ Go To 5

No

→ Go To 9

223

AUTOMATIC TEMPERATURE CONTROL

FRONT IR SENSOR NOT CALIBRATED (ACTIVE) —

Continued

TEST

ACTION

APPLICABILITY

5

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Measure the resistance between ground and the Sensor Return circuit.
Is the resistance below 10 ohms?

All

Yes

→ Go To 6

No

→ Go To 7

6

If there are no possible causes remaining, view repair.

All

Repair

Replace the ATC Remote Sensor.
With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

7

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Measure the resistance of the Sensor Return circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 8

No

→ Repair the Sensor Return circuit for an open.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

8

If there are no possible causes remaining, view repair.

All

Repair

Replace the ATC.
With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

9

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Turn the ignition on.
Measure the voltage of the KDB 2 Clock circuit.
Is the voltage above 1.0 volt?

All

Yes

→ Repair the KDB 2 Clock circuit for a short to voltage.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 10

10

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Measure the resistance between ground and the KDB 2 Clock circuit.
Is the resistance above 100k ohms?

All

Yes

→ Go To 11

No

→ Repair the KDB 2 Clock circuit for a short to ground.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

224

AUTOMATIC TEMPERATURE CONTROL

FRONT IR SENSOR NOT CALIBRATED (ACTIVE) —

Continued

TEST

ACTION

APPLICABILITY

11

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Measure the resistance of the KDB 2 Clock circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 12

No

→ Repair the KDB 2 Clock circuit for an open.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

12

If there are no possible causes remaining, view repair.

All

Repair

Replace the ATC.
With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

13

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Measure the resistance between ground and the KDB 2 Data circuit.
Is the resistance above 100k ohms?

All

Yes

→ Go To 14

No

→ Repair the KDB 2 Data circuit for a short to ground.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

14

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Measure the resistance of the KDB 2 Data circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 15

No

→ Repair the KDB 2 Data circuit for an open.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

15

If there are no possible causes remaining, view repair.

All

Repair

Replace the ATC.
With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

225

AUTOMATIC TEMPERATURE CONTROL

FRONT IR SENSOR NOT CALIBRATED (ACTIVE) —

Continued

TEST

ACTION

APPLICABILITY

16

Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Disconnect the ATC C3 harness connector.
Measure the resistance of the Protected Ignition circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Replace the ATC.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair the Protected Ignition circuit for an open.

With the DRBIII

t, reset the ATC after repair is complete.

Perform BODY VERIFICATION TEST - VER 1.

226

AUTOMATIC TEMPERATURE CONTROL

FRONT IR SENSOR NOT CALIBRATED (ACTIVE) —

Continued