TM 5-3805-298-23-1
0080
Table 1. 70 Parking Brake Switch Diagnostic Codes - Continued.
080
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
3. Using digital multimeter
70-4 Parking Brake Switch
Resistance 5.0 Ohms or Less -
(WP 0174), measure resistance
Replace parking brake limit switch
Voltage Is Below Normal -
between parking brake limit switch
(WP 0278).
Continued
(WP 0012, Figure 55) terminal NO
Proceed to Test Step 4.
and terminal C.
Resistance Greater Than 5.0 Ohms -
Proceed to step 4.
4. While depressing parking brake
Resistance 5.0 Ohms or Less -
limit switch lever, using a digital
Replace parking brake limit switch
multimeter (WP 0174), measure
(WP 0278).
resistance between parking brake
Proceed to Test Step 4.
limit switch (WP 0012, Figure 55)
Resistance Greater Than 5.0 Ohms -
terminal NC and terminal C.
Proceed to Test Step 3.
Test Step 3. Test for Shorted Lower
Cab Wiring Harness.
1. Remove left lower cab access
panels (WP 0347).
2. Remove transmission ECM cover
(WP 0266).
3. Disconnect connector C-C13
(WP 0012, Figure 25) from
Transmission ECM J2.
4. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C13
Proceed to Test Step 4.
(WP 0012, Figure 25) terminal 52
No Continuity - Proceed to step 5.
and ground.
5. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C13
Proceed to Test Step 4.
(WP 0012, Figure 25) terminal 53
No Continuity - Replace transmission
and ground.
ECM (WP 0266).
Proceed to Test Step 4.
Test Step 4. Verify Malfunction Is
Resolved.
1. Ensure all wiring harness
connectors are connected.
2. Install transmission ECM cover
(WP 0266).
3. Install left lower cab access panels
(WP 0347).
0080-5