2000 CHRYSLER CARAVAN Service Manual

TEST TC-94ACONTINUED - REPAIRING - VEHICLE THEFT ALARM TROUBLE CODES
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-94A
CONTINUED FROM
THE PREVIOUS TURN IGNITION OFF.
PAGE.
DISCONNECT THE
DISCONNECT THE ECM BODY CONTROL
HARNESS MODULE HARNESS
CONNECTORS.** CONNECTORS.**
USING AN OHMMETER, BETWEEN THE BCM
MEASURE RESISTANCE AND THE ECM. IS THE RESISTANCE YES REPAIR THE OPEN
OF THE IMMOBILIZER ABOVE 5.0 OHMS? IMMOBILIZER SIGNAL
SIGNAL CIRCUIT... CIRCUIT.*
FIG.1
NO
ENGINE CONTROL REPAIR THE
MEASURE RESISTANCE MODULE HARNESS IS THE RESISTANCE YES IMMOBILIZER SIGNAL
BETWEEN THE ... CONNECTOR CAVITY BELOW 5.0 OHMS? CIRCUIT FOR A
38 AND GROUND. SHORT TO GROUND.*
NO
WITH A JUMPER WIRE,
REMOVE THE DIESEL CONNECT DIESEL POWER
POWER RELAY.** RELAY CONN. CAVITIES
30 AND 87 (IN PDC).
FIG.2
USING A VOLTMETER, REPAIR THE
MEASURE ECM IS THE VOLTAGE YES IMMOBILIZER SIGNAL
TURN IGNITION ON. HARNESS CONNECTOR ABOVE 1.0 VOLT? CIRCUIT FOR A
CAVITY 38. SHORT TO VOLTAGE.*
FIG.1
NO
CONTINUE TEST
TC-94A ON THE
NEXT PAGE.
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
283
ProCarManuals.com

TEST TC-94ACONTINUED - REPAIRING - VEHICLE THEFT ALARM TROUBLE CODES
FIG.1
FIG.2
FIG.3
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
284
ProCarManuals.com

TEST TC-94ACONTINUED - REPAIRING - VEHICLE THEFT ALARM TROUBLE CODES
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-94A TURN IGNITION OFF. RECONNECT ONLY THE
CONTINUED FROM ENGINE CONTROL
THE PREVIOUS INSTALL THE DIESEL MODULE HARNESS
PAGE. POWER RELAY. CONNECTORS.
KEY ON. MEASURE
USE AN AMMETER IN AMPERAGE FROM BCM IS THE AMPERAGE NO REPLACE THE ENGINE
THE FOLLOWING HARNESS CONNECTOR BETWEEN 1.0 AND CONTROL MODULE.*
STEP. CAVITY 72 TO GROUND. 1.4 MA?
FIG.1
YES
KEY ON. USING THE DRB
OSCILLOSCOPE
RECONNECT THE BODY FUNCTION, SELECT
CONTROL MODULE "LAB SCOPE".
HARNESS CONNECTORS.
SET VOLTAGE RANGE SET TIME RANGE TO
TO +20.0V. SET 0.1S/DIV.
PROBE TO X10.
FIG.2 FIG.3
KEY ON. USING NOTE: A VALID
OSCILLOSCOPE LEAD, IMMOBILIZER SIGNAL
BACKPROBE ECM WILL CYCLE HI AND
HARNESS CONNECTOR LO SIMILAR...
CAVITY 38. FIG. 1
DOES THE DRB
TO THE PATTERN DISPLAY SHOW THE YES REPLACE THE ENGINE
SHOWN IF FIGURE 3. 12 VOLT CONTROL MODULE.*
IMMOBILIZER SIGNAL
CYCLING HI AND LO?
NO
REPLACE THE BODY
CONTROL MODULE.*
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
285
ProCarManuals.com

TEST SK-1AIDENTIFYING SENTRY KEY IMMOBILIZER PROBLEMS
NOTES
S
E
N
T
R
Y
K
E
Y
I
M
M
O
B
I
L
I
Z
E
R
S
Y
S
T
E
M
286
ProCarManuals.com

TEST SK-1AIDENTIFYING SENTRY KEY IMMOBILIZER SYSTEM PROBLEMS
NOTE:The Sentry Key Immobilizer System (SKIS) diagnosis may require usage of the customer's
additional keys to verify the cause of the system failure. In the event that the Sentry Key Immobilizer
Module (SKIM) needs replacing, all of the keys previously programmed into the SKIM's memory
must be programmed into the new SKIM.THEREFORE IT IS IMPORTANT THAT ALL OF THE
CUSTOMER'S KEYS PROGRAMMED FOR THE VEHICLE BE OBTAINED PRIOR TO BEGIN-
NING VEHICLE DIAGNOSIS.
NOTE:It is necessary to obtain the four-digit Personal Identification Number (PIN) from the
customer or the vehicle invoice. The PIN is required to perform certain SKIM tasks using the DRB.
NOTE:It is very important that the ECM/BCM is programmed with the correct Vehicle Identification
Number (VIN). Incorrect VIN programming may result in incorrect diagnosis and unnecessary
component replacement. Use the DRB to verify the correct VIN and country code are programmed
into the SKIM.
1. The battery must be fully charged for any test in this manual.
2. Attempt to start the engine. Crank for up to 10 seconds if necessary.
3. Connect the DRB to the diagnostic connector and select ``Theft Alarm'' then ``SKIM''.
If the DRB displays ``No Response''..................................perform test 1B
NOTE:If the DRB screen is blank or has a DRB error message displayed, go toGeneral
Information Section 3.5in this manual.
4. With the DRB, read and record SKIM trouble codes.
5. If diagnostic trouble code are displayed, refer to the diagnostic trouble code list on the next page
for the appropriate test.
NOTE:For all component locations, seeGeneral Information Section 4.0in this manual.
DIAGNOSTIC TROUBLE CODE (DTC) DISPLAYED
DIAGNOSTIC TEST
ANTENNA FAILURE**
COP FAILURE**
EEPROM FAILURE**
PCM STATUS FAILURE SK-2A
INTERNAL FAULT**
RAM FAILURE**
ROLLING CODE FAILURE SK-3A
SERIAL LINK EXTERNAL FAULT SK-4A
STACK OVERFLOW FAILURE **
TRANSPONDER COMMUNICATION FAILURE SK-5A
TRANSPONDER CRC (CYCLIC REDUNDANCY CHECK)
FAILURESK-6A
TRANSPONDER ID MISMATCH SK-7A
TRANSPONDER RESPONSE MISMATCH SK-8A
VIN MISMATCHSK-9A
**These trouble codes indicate an internal SKIM fault. Using the DRB, clear SKIM trouble code(s).
Perform several key cycles, leaving the key on for a minimum of 30 seconds per cycle. Using the
DRB, read SKIM trouble codes. If the trouble code is present, replace the SKIM.
NOTE:An intermittent start and stall condition accompanied with a transponder DTC can be caused
by the presence of a non-programmed key or key programmed to another vehicle, near the SKIM
antenna (ignition halo). This can occur if the customer has a key holder (ring) that contains more
than one key equipped with a transponder chip.
After replacement of the Sentry Key Immobilizer Module (SKIM) seeGeneral Information Section 8.0
for SKIM initialization.
S
E
N
T
R
Y
K
E
Y
I
M
M
O
B
I
L
I
Z
E
R
S
Y
S
T
E
M
287
ProCarManuals.com

TEST SK-1BSKIM COMMUNICATION
Perform TEST SK-1A Before Proceeding
FIG.1
S
E
N
T
R
Y
K
E
Y
I
M
M
O
B
I
L
I
Z
E
R
S
Y
S
T
E
M
288
ProCarManuals.com

TEST SK-1BSKIM COMMUNICATION
Perform TEST SK-1A Before Proceeding
*Perform Verification TEST VER-1A. **Check connectors - Clean / repair as necessary.
USING THE DRB, REFER TO "BODY
START TEST ATTEMPT TO CAN YOU NO DIAGNOSTIC
SK-1B. COMMUNICATE WITH COMMUNICATE WITH PROCEDURES" MANUAL A
THE BODY CONTROL THE BCM? TO DIAGNOSE VEHICLE
MODULE. COMMUNICATION.
YES
TURN IGNITION OFF. USING AN OHMMETER,
DISCONNECT THE MEASURE BETWEEN IS THE RESISTANCE NO REPAIR THE OPEN
SKIM HARNESS GROUND AN SKIM BELOW 5.0 OHMS? GROUND CIRCUIT.*
CONNECTOR.** HARNESS CONNECTOR
CAVITY 2. FIG.1
YES
USING A VOLTMETER,
MEASURE THE BATTERY IS THE VOLTAGE NO REPAIR THE OPEN
SUPPLY CIRCUIT. ABOVE 10.0 VOLTS? BATTERY SUPPLY
CIRCUIT.*
FIG.1
YES
USING A VOLTMETER,
MEASURE THE IGNITION IS THE VOLTAGE NO REPAIR THE OPEN
TURN IGNITION ON. SUPPLY CIRCUIT. ABOVE 10.0 VOLTS? IGNITION SUPPLY
CIRCUIT.*
FIG.1
YES
WAIT 2 MINUTES MEASURE BOTH CCD IS THE VOLTAGE
BEFORE CONTINUING. BUS CIRCUITS AT BETWEEN 2.3 AND NO REPAIR THE OPEN
THE SKIM HARNESS 2.6 VOLTS FOR BOTH CCD BUS
WITH THE IGNITION CONNECTOR. MEASUREMENTS? CIRCUIT(S).*
STILL ON... FIG.1
YES
TURN IGNITION OFF. KEY ON.
CAN YOU NO REPLACE THE SENTRY
RECONNECT THE SKIM ATTEMPT TO COMMUNICATE WITH KEY IMMOBILIZER
HARNESS CONNECTOR. COMMUNICATE WITH THE SKIM? MODULE.*
THE SKIM.
YES
TEST COMPLETE.*
S
E
N
T
R
Y
K
E
Y
I
M
M
O
B
I
L
I
Z
E
R
S
Y
S
T
E
M
289
ProCarManuals.com

TEST SK-2AREPAIRING - PCM STATUS FAILURE
Perform TEST SK-1A Before Proceeding
FIG.1
S
E
N
T
R
Y
K
E
Y
I
M
M
O
B
I
L
I
Z
E
R
S
Y
S
T
E
M
290
ProCarManuals.com