Jeep Grand Cherokee WK. Manual — part 714

U0208-LOST COMMUNICATION WITH

HEATED SEAT CONTROL MODULE . . . . . . . 56

U0209-LOST COMMUNICATION WITH

MEMORY SEAT CONTROL MODULE . . . . . . . 56

U0212-LOST COMMUNICATION WITH

SCCM - CAN B . . . . . . . . . . . . . . . . . . . . . . . 57

U0231-LOST COMMUNICATION WITH RAIN

SENSING MODULE . . . . . . . . . . . . . . . . . . . . 57

U0241-LOST COMMUNICATION WITH AUTO

HIGHBEAM HEADLAMP CONTROL
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

DIAGNOSIS AND TESTING

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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

WK

B1411-HFM LEFT AUDIO OUTPUT CIRCUIT LOW

WK

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

8T - 3

B1411-HFM LEFT AUDIO OUTPUT CIRCUIT LOW (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on.

•

Set Condition:
The Hands Free Module detects low voltage on the (X703) Left Audio Output circuit.

Possible Causes

(X703) LEFT AUDIO OUTPUT CIRCUIT OPEN

(X703) LEFT AUDIO OUTPUT CIRCUIT SHORT TO GROUND

(X795) COMMON AUDIO OUTPUT CIRCUIT OPEN

(X703) LEFT AUDIO OUTPUT CIRCUIT SHORT TO (X795) COMMON AUDIO OUTPUT CIRCUIT

HANDS FREE MODULE

Diagnostic Test

1.

CHECK FOR ACTIVE DTC

With the scan tool, read the active DTC’s.

Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per
cycle.

With the scan tool, read the active DTC’s.

Does the scan tool display this DTC as active?

Yes

>> Go To 2

No

>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-

nectors. Look for broken, bent, pushed out, or corroded terminals.

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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

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B1411-HFM LEFT AUDIO OUTPUT CIRCUIT LOW (CONTINUED)

2.

(X703) LEFT AUDIO OUTPUT CIRCUIT OPEN

Turn the ignition off.

Disconnect the Hands Free Module harness connector.

Disconnect the Radio C1 harness connector.

Measure the resistance of the (X703) Left Audio Output circuit
between the HFM connector and the radio connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 3

No

>> Repair the (X703) Left Audio Output circuit for an open

Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).

3.

(X703) LEFT AUDIO OUTPUT CIRCUIT SHORT TO GROUND

Measure the resistance between ground and the (X703) Left Audio
Output circuit.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (X703) Left Audio Output circuit for short to

ground.

Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE).

No

>> Go To 4

WK

NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS

8T - 5