instrument cluster CHRYSLER VOYAGER 2001 Manual Online

Symptom:
SPEEDOMETER CHECKSUM FAILURE
POSSIBLE CAUSES
EMIC - INTERNAL ERROR
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, record and erase DTC's.
Turn the ignition off, wait 15 seconds, then turn the ignition on.
With the DRBIIIt, read DTCs.
Did the DTC return?All
Ye s®Go To 2
No®Test Complete.
2 If there are no possible causes remaining, view repair. All
Repair
Replace the EMIC.
Perform BODY VERIFICATION TEST - VER 1.
612
INSTRUMENT CLUSTER

Symptom:
TACHOMETER CHECKSUM FAILURE
POSSIBLE CAUSES
EMIC - INTERNAL ERROR
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, record and erase DTC's.
Turn the ignition off, wait 15 seconds, then turn the ignition on.
With the DRBIIIt, read DTCs.
Did the DTC return?All
Ye s®Go To 2
No®Test Complete.
2 If there are no possible causes remaining, view repair. All
Repair
Replace the EMIC.
Perform BODY VERIFICATION TEST - VER 1.
613
INSTRUMENT CLUSTER

Symptom:
TCM MESSAGE MISMATCH
POSSIBLE CAUSES
TCM COMMUNICATION FAILURE
INSTRUMENT CLUSTER, TCM MESSAGE MISMATCH
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, ensure PCI Bus communications with the TCM.
Is the TCM communicating on the PCI Bus?All
Ye s®Go To 2
No®Refer to COMMUNICATION category for the related symptom.
Perform BODY VERIFICATION TEST - VER 1.
2 If there are no possible causes remaining, view repair. All
Repair
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
614
INSTRUMENT CLUSTER

Symptom:
TEMPERATURE GAUGE CHECKSUM FAILURE
POSSIBLE CAUSES
EMIC - INTERNAL ERROR
TEST ACTION APPLICABILITY
1 If there are no possible causes remaining, view repair. All
Repair
Replace the EMIC.
Perform BODY VERIFICATION TEST - VER 1.
615
INSTRUMENT CLUSTER

Symptom:
*ANY PCI BUS INDICATOR INOPERATIVE
POSSIBLE CAUSES
NO RESPONSE - PCI BUS
NO RESPONSE - INSTRUMENT CLUSTER
NO RESPONSE - ECM / PCM
INDICATOR INOPERATIVE
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, select J1850 Module Scan.
Does the DRBIIItdisplay MIC PRESENT on the BUS?All
Ye s®Go To 2
No®Refer to the COMMUNICATION category and perform the ap-
propriate symptom.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition on.
With the DRBIIIt, Select Body, MIC, the MODULE DISPLAY.
Does the DRBIIItdisplay NO RESPONSE from MIC?All
Ye s®Refer to the symptom list for problems related to *NO RE-
SPONSE FROM THE INSTRUMENT CLUSTER.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
3 Turn the ignition on.
With the DRBIIIt, select Body, MIC, SYSTEM TESTS, PCM MONITOR.
Does the DRBIIItdisplay PCM INACTIVE on the BUS?All
Ye s®Refer to the symptom list for problems related to *NO RE-
SPONSE FROM THE POWERTRAIN CONTROL MODULE
(Gas) / or *NO RESPONSE FROM THE ENGINE CONTROL
MODULE (Diesel)
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 4
4NOTE: Diagnose and repair any PCM (gas) or ECM (diesel) DTCs before
proceeding with this test.
Perform the Instrument Cluster diagnostic Self Test.
Observe the indicator in question during the Self Test.
Did the indicator illuminate?All
Ye s®Refer to the appropriate Servic Information category to diagnose
the related system.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
616
INSTRUMENT CLUSTER

BODY CONTROL MODULE C4 - BLACK/GRAY 34 WAYCAV CIRCUIT FUNCTION
1 E18 20OR/LB (POWER
MIRRORS)PANEL LAMPS DRIVER (MIRROR SWITCH)
2 E12 20OR/GY PANEL LAMPS DRIVER (HVAC)
3 E19 20OR/BR PANEL LAMPS DRIVER (HEADLAMP SWITCH)
4 D9 20WT/GY RKE MODULE PROGRAM ENABLE
5 G150 20VT/BR INSTRUMENT CLUSTER WAKE UP SENSE
6 E17 20OR/YL (EXCEPT
BUILT-UP-EXPORT)PARADE MODE SIGNAL (RADIO)
7 P162 20LG/DG (BUILT-UP-
EXPORT)PASSENGER FOLDING MIRROR RELAY CONTROL
8 G69 20VT/WT (HIGH LINE) VTSS INDICATOR DRIVER
9 L161 20WT/LG LEFT TURN INDICATOR DRIVER
10 F504 20GY/PK IGNITION SWITCH OUTPUT (RUN)
11 E14 20OR/TN PANEL LAMPS DRIVER (RADIO)
12 E13 20OR/YL PANEL LAMPS DRIVER (INSTRUMENT CLUSTER)
13 X920 20GY/OR RADIO CONTROL MUX RETURN
14 G900 20VT/OR IGNITION SWITCH SENSE RETURN
15 - -
16 - -
17 L160 20WT/TN RIGHT TURN INDICATOR DRIVER
18 M26 20YL/DB HALO LAMP DRIVER
19 - -
20 - -
21 - -
22 G902 20VT/OR MULTI-FUNCTION SWITCH MUX RETURN
23 - -
24 - -
25 - -
26 M28 20YL/TN GLOVE BOX LAMP DRIVER
27 - -
28 - -
29 - -
30 - -
31 G96 20VT/DG REMOTE KEYLESS ENTRY INTERFACE
32 B27 20DG/WT TRACTION CONTROL SWITCH SENSE
33 P136 20TN/YL (BUILT-UP-
EXPORT)FOLDING MIRROR SWITCH SENSE
34 G26 20VT/OR CHIME DRIVER
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1016
CONNECTOR PINOUTS

INSTRUMENT CLUSTER - BLACK 13 WAYCAV CIRCUIT FUNCTION
1 E13 20OR/YL PANEL LAMPS DRIVER
2 L160 20WT/TN (LOW
LINE)RIGHT TURN INDICATOR DRIVER
3 G7 20VT/GY (HIGH LINE) LOW OIL PRESSURE INDICATOR DRIVER
4 G3 20VT/LB (HIGH LINE) MALFUNCTION INDICATOR LAMP DRIVER
5 L134 20WT/GY (HIGH
LINE)HIGH BEAM INDICATOR DRIVER
6 A701 16BR/RD FUSED B(+) (HAZARD)
7 Z108 18BK/LG GROUND
8 L161 20WT/LG (LOW
LINE)LEFT TURN INDICATOR DRIVER
9 D25 20WT/VT PCI BUS
10 B25 20DG/WT (RHD) PARK BRAKE SWITCH SENSE
10 B25 16DG/WT (LHD) PARK BRAKE SWITCH SENSE
11 G26 20VT/OR CHIME DRIVER
12 G150 20VT/BR INSTRUMENT CLUSTER WAKE UP SENSE
13 Z18 18BK/LB GROUND
INTELLIGENT POWER MODULE C1 - LT. GREEN/RED 20 WAYCAV CIRCUIT FUNCTION
1 F301 18VT/PK FUSED ACCESSORY RELAY OUTPUT
2- -
3- -
4 L43 18WT/DB LEFT LOW BEAM DRIVER
5 Z344 16BK/TN GROUND
6 L34 16WT/GY RIGHT HIGH BEAM DRIVER
7 W1 18BR/TN WASHER FLUID LEVEL SWITCH SENSE
8 L33 18WT/LG LEFT HIGH BEAM DRIVER
9 G31 18VT/LG (EXCEPT
BASE)AMBIENT TEMPERATURE SENSOR SIGNAL
10 L44 16WT/TN RIGHT LOW BEAM DRIVER
11 F300 18OR/PK FUSED ACCESSORY RELAY OUTPUT
12 - -
13 Z343 18BK/LG GROUND
14 - -
15 L78 18WT/OR FUSED PARK LAMP RELAY OUTPUT (RIGHT)
16 L77 18WT/BR FUSED PARK LAMP RELAY OUTPUT (LEFT)
17 - -
18 G931 18VT/BR (EXCEPT
BASE)AMBIENT TEMPERATURE SENSOR RETURN
19 W20 18BR/YL REAR WASHER PUMP MOTOR CONTROL
20 W10 18BR FRONT WASHER PUMP MOTOR CONTROL
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1044
CONNECTOR PINOUTS

10.10 INSTRUMENT CLUSTER Ð BASE
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1101
SCHEMATIC DIAGRAMS

10.11 INSTRUMENT CLUSTER & MESSAGE CENTER
S
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1102
SCHEMATIC DIAGRAMS

The cycling of the build and decay valves is
similar to the ABS except that they work to control
wheel spin by applying brakes. ABS function is to
control wheel skid by releasing brakes.
Two pressure relief valves allow excess fluid vol-
ume to return to the reservoir when not used by the
build/decay cycles. These are required because the
pump supplies more volume than the traction con-
trol system requires.
If at any time the brake pedal is applied during a
traction control cycle, the brake lamp switch will
trigger the CAB to switch off the traction control.
The traction control system will be enabled at
each ignition cycle. It may be turned off by depress-
ing the Traction Control Switch. The traction con-
trol system function lamp will illuminate ªTRAC
OFFº immediately upon depressing the traction
control switch button. Only the ªTRACº portion of
the ªTRAC OFFº indicator will illuminate during a
traction control event. If the CAB calculates that
the brake temperatures are high, the traction con-
trol system will become inoperative until a time-out
period has elapsed. When in this thermal protection
mode, the traction control ªTRAC OFFº lamp will
illuminate; however, a fault will not be registered.
3.3 SYSTEM COMPONENTS
²controller antilock brake (CAB)
²vacuum booster
²master cylinder
²ABS integrated electronic control module/
hydraulic control unit (HCU), valve block assem-
bly: 8 valve solenoids (4 inlet valves, 4 outlet
valves, 2 accumulators) 1 motor, 2 pump
²ABS integrated electronic control module with
traction control same as above but has 10 valve
solenoids.
²4 wheel speed sensor/tone wheel assemblies
²ABS warning indicator
²fuses and wiring harness
²fluid reservoir
²TRAC/TRAC OFF indicator
3.3.1 ABS AND BRAKE WARNING
INDICATORS
The amber ABS warning indicator is located in
the instrument cluster. It is used to inform the
driver that the antilock function has been turned
off. The ABS warning indicator is controlled by the
CAB. The CAB controls the lamp with a command
over the PCI bus.
The ABS Warning Indicator will remain lit during
every key cycle until a circuit or component fault is
repaired and the CAB no longer detects the fault.After repair of a sensor signal fault or a pump motor
fault, the CAB must sense all four wheels at 25
km/h (15 mph) before it will extinguish the ABS and
TRAC OFF Indicators.
The Instrument Cluster will illuminate the ABS
Warning Indicator if it loses communication with
the CAB.
The red BRAKE warning indicator is also located
in the instrument cluster. It can be activated in
several ways. Application of the parking brake or a
low fluid signal from the fluid level switch located in
the master cylinder reservoir will cause the indica-
tor to come on.
3.3.2 CONTROLLER ANTILOCK BRAKE
(CAB)
The Controller Antilock Brake (CAB) is a
microprocessor-based device that monitors wheel
speeds and controls the antilock functions. The
CAB contains two microprocessors that receive
identical sensor signals and then independently
process the information. The results are then com-
pared to make sure that they agree. Otherwise, the
CAB will turn off the antilock and turn on the ABS
amber warning indicator.
The primary functions of the CAB are to:
²detect wheel locking tendencies
²control fluid pressure modulation to the brakes
during antilock stop
²monitor the system for proper operation
²manage traction control functions
²provide communication to the DRBIIItwhile in
diagnostic mode
²store diagnostic information in non-volatile memory
The CAB continuously monitors the speed of each
wheel. When a wheel locking tendency is detected,
the CAB will command the appropriate valve to
modulate brake fluid pressure in its hydraulic unit.
Brake pedal position is maintained during an an-
tilock stop by being a closed system with the use of
2 accumulators. The CAB continues to control pres-
sure in individual hydraulic circuits until a wheel
locking tendency is no longer present. The CAB
turns on the pump motor during an antilock stop.
The antilock brake system is constantly moni-
tored by the CAB for proper operation. If the CAB
detects a system malfunction, it can disable the
antilock system and turn on the ABS warning
indicator. If the antilock function is disabled, the
system will revert to standard base brake system
operation.
The CAB inputs include the following:
²diagnostic communication
²four wheel speed sensors
2
GENERAL INFORMATION